A large underground facility with a mysterious history. Its tunnels stretch for several kilometers in the thickness of the mountain, and its spacious halls surprise with their size. There is still no reliable data on how this facility was used, some say that it was a secret underground plant built by the Nazis, others claim that it was one of the many command bunkers of the Third Reich.
In this video, UnderWorld diggers will try to solve the mystery of the dungeons left over from World War II, and not get lost in their labyrinths.