Project Der Riese

The Der Riese project or project Riese (The Giant), was a secret project, so secret in fact that very little about it has been documented. During 1943, World War Two, the Allies were constantly bombing Germany. The Führer wanted to make weapons and technology that the allied forces didn't have. Hence forth the Wunderwaffe project (wonder weapons). The Germans set up base in the Owl Mountains which is in Poland, near The Henge. The mountains also had a large quantity of gneiss, which is a  very hard rock which would help protect against Allied bombing. The facility was a large network of underground factories, which was thought that the tunnels stretched for over 200,000 meters. Most of the tunnels are not documented as they cannot be found. The Tunnels most likely contain world's treasure stolen by the Nazis, as well as the body of POWs,  test subjects, and some of the things they have built. They built a giant bell called Die Glocke which means The Bell which was thought to be an anti gravity machine, sort of like a UFO. Hitler assigned them to build this device. The Henge, which was near the facility, was thought to be a launch pad for die Glocke. In 1945 the Nazis destroyed all documentation of Der Riese and it hadn't been discovered until the year 2000, when Polish author Igor Witkowski wrote a book about Der Riese called The Truth About The Wunderwaffe. It is unsure wither Witkowski is right or wrong, but this has been the story of Project Der Riese.
This is Die Glocke.