Das unterirdische Reich. Die geheimen Welten der Nazis (2003) - full transcript

Late in World War II, while Germany sustained relentless bombing by the Allies, the Nazis undertook a bold gambit to turn the war back in their favor. Building an extensive tunnel system deep underground to house armament factor

in the history of mankind,

the Third Reich's bomb-proof factories.

Germany's Wunderwaffen were to bring death

and destruction to its enemies.

Gigantic underground
plants would have kept

the supply chain running
for the Wehrmacht.

Armaments Minister
Albert Speer had devised

the monstrous plan for his Fuhrer.

Today, only few may set
foot in the remnants

of the mammoth project.

Hundreds of millions of
Reichsmarks were spent



in order to hollow out entire mountains.

Production plants for weapons
essential to the war effort

were to be built in
underground tunnel systems.

Hundreds of thousands of
slave laborers had to toil

for the ambitious plans of the Nazis.

The number of those who lost
their lives is uncertain

Up until the last day of the war,

work in the tunnels went on feverishly.

Yet how close had the
Nazis come to accomplishing

their outrageous project?

What would have happened

if the underground armament
production had run successfully?

Would Hitler's war of
annihilation have claimed

millions more victims?



(dramatic music)

A slope close to the Bavarian
town of Oberammergau.

Here, one of the mysterious
tunnel systems laid out

by the Nazis is hidden from
the eyes of the inquisitive.

The only entrance is
blocked with a concrete seal

only the state-appointed
geologist may open it.

Every few years, he has to
make sure that everything

inside is intact.

Heinz Rabe is responsible
for about 20 subterranean

tunnel systems in southern
and eastern Germany.

He has to test whether the installations,

which were built 60 years
ago, are still safe.

After the end of the war,

the Americans went into
the tunnels in Oberammergau

and searched through everything.

Since then the tunnels have stood empty.

The wooden lining is rotten
and stones may come loose

from the roof at any time.

(speaking in foreign language)

- [Translator] During the war,

the plant belong to Messerschmitt AG.

It served as a bomb-proof
production and development plant

for the aircraft construction.

According to the plans, there
were three or four portals.

We've opened one.

The others were all blasted
at the end of the war.

Here, we have two parallel tunnels

of about 80 or 90 meters in length

connected by cross sections.

They were used as bomb-proof
production plants.

- [Narrator] The Allies knew of 340

underground construction sites

even before the end of the war.

Over 400 had been given code
names during the Third Reich

and the plans of the Ministry of Armaments

pointed to some 800 plants.

The Nazi leadership had
hesitated for some time

before it decreed the excavation
of subterranean factories.

Only in the summer of
1943, when the air raids

of Allied bomber squadrons
became increasingly destructive,

did Hitler's armament
Minister Albert Speer

give the command to systemically transfer

the war production underground.

Initially, the industry rejected the idea

although the outrageous costs
were borne by the government.

The plans appeared to be incomplete

and their implementation too chaotic.

At first, the Nazis had
existing mines expanded.

One of the first projects was
realized at the end of 1943

on the bank of the Neckar River codenamed

(speaking in foreign language)

120 meters deep under the vineyard slopes,

a gigantic subterranean
tunnel system still lies here

out of sight.

Initially, the mines in Neckarzimmern

had been extracting
gypsum for over 150 years

During World War I, they
housed a dynamite factory

and, from 1937, they were
used to store ammunition.

Whether the workers' latrines
date from World War II

is uncertain as this tunnel
system is one of the few

that are still in use.

The iron gate opens into
a subterranean town.

The mountainside is hollowed
out by a road network

34 kilometers long.

A gigantic arms forge was to be built here

on an area of 130,000 square meters.

It was partly put into
operation in the spring of 1944.

Today, the facility covers a total area

of 170,000 square meters.

Some units of the German armed forces

are stationed in Neckarzimmern.

(speaking in foreign language)

- [Translator] Two plants
were transferred here

during World War II, the production

of ammunition casing of a
nearby ammunition factory

and a ball-bearing production
plant for a factory

that was initially situated
in the Schweinfurt.

When the army began to expand
this installation in 1957,

Europe was in the political
crisis of the Cold War

and because of the threat
of possible confrontation,

facilities were sought that
would also be nuclear bomb proof

in order to be able to store
high-grade valuable parts

and to continue the necessary repairs

even under aggravated conditions of war.

- [Narrator] 720 people
work underground here

providing supplies and
repair parts for the army.

The maintenance of the plants cost

the German Ministry of Defense
$1.6 million Euros annually.

- [Translator] Our job these days

in this underground facility
is to repair and store

for safekeeping sensitive materials,

particularly materials which
are worth being guarded.

The greatest advantage here

is that we have special
climatic conditions,

invariable air temperature and humidity,

so that there is little effort involved

in preserving and packaging.

In addition because of
the few access points

and ventilation shafts, the
plant is also very easy to guard

so the number of guards necessary

is comparably small for
this gigantic installation.

- [Narrator] In the same tunnels
where materials are stored

for the German peace missions

in Kosovo and Afghanistan today,

weapons of war were to
be produced 60 years ago.

The expansion of the tunnel
system would have cost

at least 50 million Reichsmarks.

Only half of the project was completed

by the end of the war.

The ball-bearing factories
in Schweinfurt in particular

were the target of the
Allied bomber raids.

In spite of heavy losses,
the Americans succeeded

in razing the factories to the ground.

Their main goal, however, namely
to paralyze the production

of supplies for Hitler's Wehrmacht

was not achieved at that stage.

(explosion booming)

Up to 80% of the key war industries

were to be moved underground.

Along with the ball-bearing factories,

these were the production
plants for aircraft engines,

fuel tanks and the secret
missile program of the SS.

Only about 20% of these projects
were put into operation.

(dramatic music)

Installations that were
considered essential

for the war effort were well camouflaged

in order to become invisible

to the Allied reconnaissance planes.

For instance, the gigantic
fuel tanks of Nazi Germany

were bunkered underground from
as early as the mid 1930s.

One such tank near Bremen
is still in operation

over 60 years later.

The state-owned installations
must be maintained regularly.

Only trained personnel can
descend into the tanks.

Each of the 80 gigantic tanks

holds 4,000 cubic meters of fuel.

They are made of 12-millimeter
thick shipbuilding steel

with a one-meter thick concrete jacket.

Everywhere in the Third Reich,

the underground construction work

was given the highest priority.

- [Narrator] This propaganda film

is called Weapons, Hands, Hearts.

It contains rare footage

of the subterranean construction sites.

These scenes were shot
in Kahla in Turinnia

where an aircraft factory was
to be built codenamed Lax.

It was mostly foreign slave laborers

who had to do the dirty
work in the tunnels

under inhuman conditions.

(speaking in foreign language)

- [Translator] On our first day,

we were divided into groups.

A German officer made
his speech and told us

you will work until you drop dead.

Three people had to drill
holes in the tunnels,

another three shoveled and
one took out the full tippers.

We stood on a scaffold and
drilled huge holes into the roof

2.5 to three meters deep which
were filled with dynamite.

Then they blasted it and
we had to get back to work

and start shoveling
immediately afterwards.

We could not even see one another
in all the dust and gases,

but they were merciless.

We had to carry on.

- [Narrator] After their
grueling 12-hour shift,

the tens of thousands of slave laborers

were given a frugal food ration.

At the beginning of February
1945, even 14 to 16-year-olds

were assigned to Kahla in order to help

with the construction.

(speaking in foreign language)

- [Translator] From a technical viewpoint,

the concept was rationally
thought-out and essential

considering the air supremacy
of the Allies over Germany,

but the means to realize it
was sheer madness, of course.

The engine had to be kept
running at full steam

although it was foreseeably
speeding towards disaster,

namely the end of the thousand-year Reich

and the cruelties that
took place was something

that is beyond the understanding
of a normal thinking

and feeling human being.

(speaking in foreign language)

- [Narrator] One of the most
closely-guarded new weapons

of the Luftwaffe was
manufactured in Kahla,

the jet fighter Me-262.

The first aircraft was ready for takeoff

in mid-February 1945.

- [Translator] The jet
fighter looked like a fish.

It was ultra-modern, very
slim and presumably very fast.

We'd heard some rumors that the plan

was to build 1,200
fighters here every month.

We just couldn't believe that,

but it happened before our eyes.

We were all terrified
because it was obvious

that if the war lasted any
longer we would not survive.

- [Narrator] These aerial
photos of Kahla were taken

by the US Air Force in 1945.

The bunkered entrances
and the freight lift

at the side of the mountain
are clearly discernible.

Inside the mountain, the
Nazis planned to build

a total of 30 kilometers of passageways.

At the end of the war,
almost half this distance

had been blasted through the rock.

The tunnels that were not lined

led into the actual heart of the plant,

four gigantic subterranean halls

covering 27,000 square meters,

where the manufacturing was to take place.

- [Translator] We are
in one of the huge halls

which they were planning
to use for the assembly

of the jet fighters, the Me-262.

Here, the fighter was put together

and then transported above ground

through this large cross
section of a tunnel.

Then it was hoisted up the
mountain by means of an elevator

and, from there, it would take off.

- [Narrator] Above the totally
excavated mountain ridge,

the Germans had apparently
laid out a runway

for this purpose.

The serial production of the jet planes

was only a question of time.

As it happened, only few of
them ever took off from there.

- [Translator] I remember
two take offs of Me-262s.

We were working outside
and were able to see

the sloping elevator as
well as what was happening

above ground.

We all looked up and some
were already pointing

at the horizon and then we
saw this strange aircraft

flying incredibly fast.

One could really say that the Me-262

was another wonder weapon.

- [Narrator] The Nazi leadership
had placed great hopes

on the potential of the new wonder weapon.

Ultimately, however, even the
state-of-the-art jet fighter

was largely ineffective
against the superiority

of the Allied air combat forces.

Up until the end of the war,

hundreds of thousands of
internees were transferred

from the concentration camps
in the east to the Reich

in order to build new aircraft factories

within a few months.

Max Mannheimer came from
Auschwitz to Muhldorf,

a town by the Inn River in February 1945.

- [Translator] We knew
that a subterranean factory

was to be built there and we also knew

that the reason for that was
because the armament plants

above ground were all being bombed.

They decided to transfer everything

under the surface of the earth.

Here, for example, there should have been

three stories underground
and three stories above.

To me, it seemed like ancient Egypt

and the building of the pyramids.

A lot of people running back
and forth driven by overseers

because it was a project
that had to be finished

very quickly.

- [Narrator] A five meter
thick and 400 meter long roof

made of reinforced
concrete would form a vault

over the production halls.

Some 2,000 inmates lost their
lives during its construction.

- [Translator] The main jobs were digging,

carrying iron and carrying cement.

That was actually the worst command

and also the most feared.

The SS doctors at the time
calculated that an inmate

who did this job and if he
performed as he was expected

to do had a life
expectancy of 60 to 80 days

and this calculation proved
to be quite accurate.

- [Narrator] When the war ended,

Max Mannheimer's body weight was 37 kilos.

Many of his fellow laborers did not live

to see the liberation.

Crammed in freight trains,
they were evacuated

from Muhldorf and other
camps and taken to Dachau.

The pictures of the dead but
also those of the survivors

shocked the free world.

(dramatic music)

In a forest northeast of Nuremberg,

there is another hidden portal to a tunnel

usually sealed by a concrete wall.

Mining engineers have opened
it in order to carry out

some maintenance work.

The (speaking in foreign language)

near Hersbruck is one of the biggest

subterranean constructions
built by the Nazis.

Even today the people in
the surrounding villages

in the Franconian alp
do not know how large

the mysterious tunnel system
in the mountain really is.

The tunnels were lined in
parts but evidently never used.

Once a year, Heinz Rabe
inspects the installation.

Especially during the
winter, tunnel parts cave-in

and must be repaired, a job
which requires a lot of effort.

The mining expert is well
aware of how dangerous

working underground is,
particularly, in the sections

that had not been reinforced by the Nazis.

Loosened blocks of stone
can fall at any time.

- [Translator] We're now leaving
the lined tunnel sections

and entering the unlined ones.

As you can see here, it's
all sandstone without support

and the greatest risk is that
piles of sandstone come loose

from the roof and fall
and cause depressions

that can reach as far as and
be seen from above ground.

- [Narrator] The Nazis
gave this installation

the code name (speaking
in foreign language) one.

- [Translator] We're now coming
into a heading to the point

where this tunnel should
have been driven forward.

You can see here that the
bore holes for blasting,

these black dots, had already been made.

And, if you're lucky, you could also find

explosive cartridges in the bore holes

next to the drill rods like this one here,

which is an original, that are
still embedded in the stone.

Here is one such cartridge.

So, the bore holes were
loaded ready to be blasted.

It all stopped abruptly.

They left everything
behind just as it was.

- [Narrator] Over 9,000 inmates

from the Flossenburg Concentration Camp

were forced to work here
under appalling conditions

so that the tunnels were
excavated as quickly as possible.

Some 3,500 of them died.

- [Translator] From the
planned 100,000 square meters

of area only about 15,000 were completed.

The excavations should have
been continued in this direction

as you can see from
these so-called drifts.

These galleries are all 20
meters apart from one another

and would have been used
as production plants.

The excavation works on this tunnel system

began in March 1944 and
continued up until May 1945.

Approximately 7.5 kilometers
of tunnels were dug

and parts of them, about 10%,

had already been lined with concrete.

All the rest are still unsupported.

This underground
installation was to be used

for the production of BMW aircraft engines

and the aim was to transfer
the manufacturing plant

from above-ground to a
bomb-proof underground site.

- [Narrator] The slave
laborers blasted and removed

half a million cubic
meters of dogger sandstone

from the mountainside.

Yet aircraft engines
were never built here.

By order of the American occupying power,

the portals to the tunnel
system were walled up

after the war and the abandoned
plant fell into oblivion.

Every now and again, former
concentration camp inmates

come here in order to commemorate
their murdered companions.

There was one new type of weapon

on which the Nazi leadership
pinned their hopes

that would bring a decisive
turn in the course of the war.

In the propaganda jargon
of the Third Reich,

it was called V2.

V stood for vengeance.

Missile engineer Wernher
von Braun had developed

in Peenemunde a new ballistic
missile of the type A4

to a stage where it was
ready for production.

With the V2, the Nazis wanted
to bomb targets in England

and thus terrorize the
British civilian population.

(roaring)

Despite numerous
unsuccessful launch attempts,

the V2 was operational
in the summer of 1944.

(explosion booming)

An inconspicuous mountain
ridge in the Harz region.

In mid-April 1945,
American troops advanced

to the town of Nordhausen.

In the shadows of the Kohnstein mountain,

they found a concentration camp

with emaciated inmates and many corpses.

Here, survivors of the Mittelbau-Dora Camp

report to their liberators
details of mysterious tunnels

in the mountain and a
top-secret missile factory

where they had to work as
slave laborers of the SS.

Yet the victors had long
known that one of the most

important arms forges of
the Third Reich was here.

After the British carried
out a devastating bomb raid

on the Peenemunde plant, the
Nazis quickly transferred

the missile production
to an already existing

underground fuel tank in August 1943.

Concentration camp inmates had to begin

excavating immediately under
the cruelest of conditions.

- [Translator] The 10,000
inmates were put up

in four crosscut connecting
chambers of the tunnel system

which meant that they slept
where they had to work.

They were totally inadequately dressed

for the conditions they
faced here below ground.

They just wore their thin
strapped prisoners uniforms

in the cold and the air was very humid.

And this, of course, quickly
resulted in the spreading

of pulmonary diseases
and it was no surprise

that many of the 3,000 fatalities

during the first five months
were caused by tuberculosis

and other lung diseases.

All the others died of
exhaustion, starvation,

or froze to death but also
from maltreatment by the SS

and the civilian employees of the plant.

- [Narrator] The 250,000
square meter tunnel system

in Kohnstein is largely closed today.

Being in the unlined tunnels
is extremely dangerous.

Only the men of the Mines Safety Authority

go in periodically to inspect the plant.

However, treasure or souvenir
hunters often attempt

to enter the tunnels illegally

as original pieces from the mountain

where the missiles were
built are very sought after

by collectors.

Peter Wolff was brought to
Mittelbau-Dora from Auschwitz.

As a Jewish inmate, he was
given the camp number 105065.

His memories are so dreadful

that he doesn't want to
enter the tunnels again.

- [Translator] We were inmates
in the camp at Nordhausen.

A train took us every morning
and drove us to the tunnels.

We were considered the death commando

and people called us that too.

Working outside was somewhat easier,

if you can use that
word, compared to inside

because inside one was under
constant SS supervision

and people were beaten all the time.

The inmates before us never saw daylight.

They were in the tunnels 24 hours a day.

They slept, ate and worked underground.

The conditions were murderous

and the brutality of the
SS beyond description.

A lot of people died in there.

- [Narrator] These memories demonstrate

the unspeakable suffering
of the slave laborers.

Today, the interior of the mountain

is still littered with debris.

It's almost unimaginable
that an entire factory

was once in operation here.

The Armament Ministry had
assigned 200 million Reichsmarks

for the creation of a gigantic
subterranean industrial area

of 600,000 square meters in total.

The production of the V
missiles was at its core.

A thousand rockets were
to be produced per month

according to the ambitious plan.

In April 1944, the output
was 450 and even this number

was rarely achieved as the
production seldom ran smoothly.

- [Translator] It was
not an ordinary factory

in the sense that the product
which was being manufactured

was not ready to go into mass production.

Almost on a daily basis, Peenemunde,

the development plant of the
A4 missile would send orders

to alter the production
process and these modifications

were then adapted into production here.

As a result, more than half
of the rockets produced

were not fully operational.

- [Narrator] Rare color pictures taken

by Hitler's cameraman Walter Frenz.

Under the instructions
of German technicians,

selected prisoners put
the missiles together

from some 45,000 component parts.

The assembled V2s were taken to tunnel 41

for the final inspection.

The 15-meter tall testing tower

is almost completely under water today.

From here, the missiles were
loaded onto freight trains

and transported to the launching
sites in northern Germany

and occupied Holland.

After the end of the war,

first the British and then the Americans,

collected everything that
could be of use from the plant.

Then the Soviets came and
took whatever was left.

Yet in tunnel 29, relics
of the underground

missile production can still be found.

Jet engines and other parts
rust away in the water.

(dramatic music)

They are the last remnants
of the insane idea

to transfer most of the Third
Reich's armament production

under the earth.

Whether the deployment of a great number

of operational missiles
would have influenced

the outcome of the war is questionable.

In Kohnstein, however,

their production plant
was almost unassailable.

- [Translator] The Allies had extensive

and detailed information
about what was happening here,

chiefly through the evaluation

of aerial reconnaissance photos.

For example, they had
located and knew exactly

where the ventilation
shafts were in Kohnstein.

And they thought long and hard
about whether they could drop

phosphorous or other incendiary
bombs into the shafts

in order to bombard
the underground factory

and render it obsolete.

- [Narrator] U.S. army footage
from April the 12th 1945.

The whole horror of the
Mittelbau-Dora Concentration Camp

revealed itself to the liberators,

after a British bomb
raid had heavily damaged

the Berga death camp.

This was where the emaciated
SS slaves were brought to die.

Annihilation through work.

- [Translator] Somehow you
get used to seeing dead people

all around you.

Early every morning, each block
had to report for roll call.

Everyone had to be counted,

even those who had died during the night.

So, we had to lay them on one side.

We were always happy to
have survived the day.

I'm often asked why did you
not offer any resistance

to the SS troopers?

And I always reply, if we were
still alive by the evening,

we had offered enough
resistance the whole day.

(engines roaring)

(dramatic music)

- [Narrator] The chief destination

of the destructive weapon was London.

On September the 7th
1944, the first V2 struck

at the heart of the British capital.

Tens of thousands more would follow.

At least, that was what the
Nazi leadership was planning.

Propaganda Minister
Joseph Goebbels gloated.

The first successful
strikes of V2 missiles

were unscrupulously
exploited on the home front.

(crowd cheering)
(crowd applauding)

- [Narrator] Initially, the
Nazi leaders had planned

to launch the V missiles from
gigantic launching bunkers.

In May 1943, construction
of a concrete colossus

40 meters wide and 75
meters long began in Watten

in northern France.

The German engineers believed
that the five meter thick

reinforced concrete roof was impenetrable.

British bombers proved them
wrong in the summer of 1944.

The incomplete base was
severely damaged by bombs

and became useless for
launching V missiles.

The interior of the mammoth installation

was converted after the raid

and was used for the production of fuel.

A true-to-scale model of
the V2 reminds us today

of the original purpose of the plant.

From the Wehrmacht's viewpoint,
the destruction of Watten

was a tactical error on
the part of the Allies

as the bombing led to
new launch possibilities

being considered.

The missiles, according to the plan

supported by Professor von Braun,

should be launched from
a number of mobile ramps.

These easily camouflaged launching sites

could not be identified
in time by the enemy.

It would be difficult for
Allied bomber pilots to locate

and destroy such targets.

- Oh yeah, we knew all
about the danger of this.

The V2s, especially when
they started coming,

they would blow those off from France

and they would come down
somewhere in England.

This is rather pretty horrifying really.

For people who obviously
knew more about it,

for instance Churchill, it was crucial

because he was thinking
about morale as well.

Whereas to us, of course,
it was merely another job.

We realized the importance
of it and to get on with it

and do the job but we had nothing

about the far-reaching implications of it.

- [Narrator] The 617 Squadron
of the Royal Air Force,

also called the Dambusters,
was put into action

every time British
intelligence had identified

military point targets
such as the launching sites

of V rockets.

In the northern French town of Wizernes

stands, perhaps, the most
spectacular subterranean bunker

built by the Nazis.

From here, the vengeance weapons

would be launched in great numbers.

The locals called the gigantic
roof construction La Coupole,

the dome.

Inside, the missiles would
be fitted with warheads

in an assembly line style of production.

According to the plans of the Nazis,

the operational missiles
would then be transported

to a former quarry and
be launched immediately.

The storage capacity was 500 missiles.

Starting from an old quarry,
thousands of slave laborers

had to blast open kilometers of tunnels

into the mountain under
inhuman conditions.

(dramatic music)

The concrete dome was five meters thick

and weighed 55,000 tons.

It would form a protective vault
over the heart of the unit.

The excavation work in
the interior had begun.

Here, the missiles were to be uprighted

for the final assembly, the
fitting of the warheads.

The octagonal hall is 13 meters high.

Yet not long after construction had begun,

the Brits heard about the plant
and ordered the Dambusters

to destroy it.

- It was important, in fact,
that we knocked it down

before it started sending
all these dreadful things

over to us.

We were thoroughly
briefed where we were told

everything they knew about them.

The whole idea of it as well
was to undermine targets.

So, it had a dual effect.

If you got a direct hit,
it will blow the place up

and blow it completely to smithereens

and, at the same time, we would undermine

all the foundations.

- [Narrator] British military
engineers had developed

a special type of bomb for this purpose.

The 12,000 pound tall boys could penetrate

through meters of solid concrete.

On July the 17th 1944,
these bombs were used

to attack Wizernes.

Although the planes of
the 617 Bomber Squadron

did not manage to land a
direct strike on the dome,

the entire plant became
ineffective after the raid.

- Well, we get the information

because the photo aeroplanes came back.

Almost immediately they were over there

and they got the photo
and they'd come back

and we would be told how
successful the raid was

and also if you had to go
again because, with tall boys,

you'd normally didn't have to go again

if it was successful.

- [Narrator] 11 days prior to that,

the Dambusters had also
attacked Mimoyecques,

a small village just a few kilometers

away from the channel coast
to the south of Calais.

By command of Nazi
Armament Minister Speer,

the building of another
subterranean plant had begun here

in the summer of 1943 for
the production of a weapon

which was to reach London
directly just like the V2.

One single tall boy bomb was
enough to end Hitler's dream

of the so-called England cannon.

The bomb broke through the
six-meter thick concrete roof

and exploded inside the mountain.

Slave laborers had blasted
100-meter long shafts

diagonally into the mountain
to accommodate entire batteries

of new high-pressure pumps.

These cannons, also
called V3 or Busy Lizzies,

were supposed to fire shells to distances

of up to 200 kilometers.

It's not clear which kind
of shells the England cannon

was to fire at a speed of
one kilometer per second.

Theories exist that mention
biological or chemical weapons,

but there is no evidence to support them.

After the successful bombing raid,

the installation was useless
but not completely destroyed.

Today, a few of the 60-year-old tunnels

are still accessible.

A model of the so-called millipede

reminds us of the magnitude of the plan

the Nazis tried to achieve here.

The threat to England had
obviously been so great

that British Prime
Minister Winston Churchill

concerned himself with
Mimoyecques for eight months

after the liberation of France.

He could not allow this
installation to pose a threat

to the safety of the country,

he wrote in a confidential memorandum.

As a result, the V3 shafts
that were not destroyed

in the raid were blasted
by British engineers.

Did Churchill know more
about the plans of the Nazis

than is known today?

An obsolete railway track
leads into no-man's land,

Falkenhagen southeast of Berlin.

British records concerning
this small place

in Brandenburg's countryside,
are partly classified

to this day.

The reason is that here was to be produced

one of the most dangerous
weapons of mass destruction

in the history of war.

(dramatic music)

- [Narrator] A Wehrmacht
instructional film.

The effects of the toxic substances,

mustard gas and hydrocyanic acid,

were demonstrated on living objects.

Great Britain, the United
States and the Soviet Union

stockpiled large amounts
of these warfare agents

during the second world war.

Nazi Germany also had some 55,000 tons.

Yet these lethal gases were not used.

The memories of the terrors
caused by the use of gas

in the first world war were too dreadful.

Dr Hoffman, a physicist and former member

of the GDR's Academy of
Sciences, has been investigating

the history of Falkenhagen for decades.

In 1938, the military had built the unit

in a large, densely
forested area to protect it

from inquisitive eyes.

Under the code name (speaking
in foreign language)

scientists here developed
mostly incendiary substances.

Incomplete parts of buildings
testified to a project

which was started here in 1944.

The Army Supreme Command
had made the grounds

available to IG Farben.

The chemical concern was
to produce a completely new

chemical warfare agent.

44 million Reichsmarks were apportioned

for the construction.

A gigantic thermal power station

was already structurally complete.

The chemists had already
transferred their labs

to Falkenhagen.

(speaking in foreign language)

- [Translator] There was
a new process development

and that was the nerve agent Sarin.

This warfare agent was to
be produced in a large plant

here in Falkenhagen.

Sarin mainly affects
the respiratory system.

A concentration of one droplet,

which evaporates into a cubic
meter of air is sufficient,

and when one comes into
contact with this agent,

death by respiratory failure
will result within six minutes.

- [Narrator] The
traditional chemical weapons

that were known at the time
would have been recognized

by the soldiers on both sides.

(soldier yelling)

(explosion booming)

The use of protective
gas masks was practiced

over and over again.

Sarin, however, was different.

One could neither see it
nor smell or taste it.

With Sarin, death came with no warning.

It's said that Hitler had
forbidden the use of gas

because he'd almost lost his eyesight

after a gas attack during
the first world war.

At the same time, however,
he personally ordered

the production of Sarin.

Would he have had the nerve
to use this new weapon

if it had been available?

With a month's production of Sarin,

the Nazis would have been able
to eradicate the population

of a city as large as London.

When the Red Army reached the
borders of the Third Reich

at the beginning of 1945,

the German chemists in Falkenhagen

packed up their equipment and left.

Nothing should give the victors
any clues about their plans.

Sarin was never produced here.

The Soviet conquerors
used the production tract

for breeding pigs.

- [Translator] After the war,

people were rendered speechless

when they realized the
disastrous potential

of what was in preparation here.

This chemical warfare agent
was a purely German invention

and was totally unknown to the Allies.

500 tons monthly is a vast amount

and, with artillery shells or bombs,

one could have exterminated whole areas.

With such a weapon, one
does not distinguish

between civilians and soldiers.

- [Narrator] An 80-meter-long
subterranean duct

is what remains of the semi-finished

filling plant for Sarin.

IG Farben had announced that production

could commence in the summer of 1945.

How realistic that was can no
longer be established today.

(dramatic music)

American tank units advancing into Austria

in early May 1945.

The sorry remains of the
Wehrmacht had surrendered

to the superiority of the Allies

and become prisoners of war.

Footage from the end of
the war near Salzburg

filmed by a cameraman of the US Army.

On May the 8th, two days after

the Ebensee Concentration Camp

was liberated by the Americans,

war correspondents
documented the suffering

of the survivors.

Concentration camp
inmates and slave laborers

from Ebensee had been toiling
in a SS secret tunnel system

close to the camp, codename cement.

Today, a diesel locomotive
drives into the mountain

once a day in order to remove
the lime that is mined there.

60 years ago, the Nazis
expropriated the family business

and gave it to the SS for the production

of the most spectacular new development

in the field of military engineering.

The plant was never put into operation.

However, especially in
the former tunnel A,

the initial purpose can
still be identified.

The halls in which
intercontinental missiles

were to be assembled
under the supervision of

SS Obergruppenfuhrer Hans
Kammler are 30 meters high.

The newest missile model,
the 26-meter-tall A9

was supposed to have a strike range

that would reach as far as the USA,

according to the ambitious
plans of the Nazis.

20 such rockets would be
built monthly in Ebensee.

The A9 project did not even
reach the testing stage.

Its inventor, Wernher von Braun,

was taken to the USA
without further questioning

after the end of the
war where he continued

his missile research for his new masters.

The precise number of
the victims of his work

while in Hitler's service is unknown.

(dramatic music)