Inside Adolf Hitler’s secret underground tunnels, where the Nazis tested new weapons in the last days of the second world War’


These remarkable photographs lift the lid on the long-abandoned German tunnels that are believed to have led to a secret Nazi weapons testing bunker.

After hunting through miles of underground corridors, urban explorer, Warren Tepper, from Hampshire, was shocked by his discovery after climbing through a hole in one of the walls of reinforced concrete.

It is claimed that the area was in the second world War shelter for the Nazi’s during the bombing of the Allied troops, and a bombing system, where ammunition was tested on steel plates.



Inside, Warren and co-explorer, Frosted, found 4-inch bullet holes in metal, along with similar holes in the bullet-proof glass, believed to have been from the time when the Americans attacked the site.

The bunker in and around tunnels, which lie under Duisburg, Germany, would also be visited by Adolf Hitler and used as a place for secret meetings.

Warren said: “In the beginning we had not really much to see, it was just a set of empty tunnels, but then we climbed through a hole in the wall to another part of the tunnels that had been blocked off.”

“It was only then that we started to get a feel for how large and amazing the tunnels were,” he added.

“As we carried on walking around the tunnels, we started to find more and more exciting things. Then we found the ammunition storage and were both very excited at this point, so we carried on in the miles of underground tunnels.”

This was followed by the weapons testing room.


Warren said: “It seems as though they are firing some large caliber guns down there would be that came through the tunnels and is very loud.

“I would not like to have is the guns went off inside,” he remarked. “The huge size of the tunnels, the largest I’ve not yet.”

According to research, Adolf Hitler had secret meetings in these tunnels as he took a special interest in the technical development of weapons.

“From what I’ve read, it was captured by the Americans so the bullet holes in the bulletproof glass.”

For Warren and Matt, of Finders Beepers History of asylum Seekers, this was one of the most impressive sites they have visited.

Warren released the footage on his own YouTube Channel ‘Warren Urbexing’ gathering thousands of views within a few days.

Warren said: “To date, the largest series of tunnels I’ve explored, and it was my first abandoned exploration that I’ve done outside England.

“It is also the most amazing thing I have done so far because of the weapons-testing facility in a series of tunnels.”

Warren explains some of his favorite parts of the exploration.

“When we first walked in the weapon-testing room, I thought it was a furness where they heat treated the metal and really don’t know what to think, until I saw the metal with the bullet holes in the huge bit of metal.”

He said: “When everything fell into place and I know exactly what it was, we were in and what it was used for. I was like a kid in a candy store, very excited.

“The bullet holes in the metal told me that there are large cannons to be fired down into the bunker and it was scary to think that in the tunnels.


“Bullets would be flying all over the place by rebounds, and the noise in the tunnels must have been horrible for whoever was there.

“The holes in the glass something else; it makes you think how the soldiers must have felt being shot at. Even though the bullet proof glass, it is still scary.

“Matt and I think it’s the Americans shooting at the Germans during the war for the capture of the tunnels as just on the road to the village of Aachen, which is famous for the Americans fight against the Germans.”

This story originally appeared in The Sun.

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