When two friends decided to go for a hike in North Germany, they never in their wildest dreams expected to find what they did.
A short while into their hike, they were deep in the woods, in complete isolation. That’s when one of them spotted two strange objects in the distance.
They decided to take a closer look and inspect and as they got closer they realized these were two giant pipes sticking out of the ground.
And as soon as they got to the pipes, they both knew they had found something very interesting.
These pipes were just the start of an elaborate underground building.
See the rest of the photos they took below: