the survey revealed several passageways buried a foot or more under the ground. Some of these, the researchers say, can be linked to secret military tunnels that can also be seen represented in ...

Yet, very few people know the history of the tunnels or that they even exist. Unlike New York's Fort Totten Tunnel that ... some of them really do exist. Under Los Angeles, there is a labyrinth ...

In a press release, researchers from Germany's Johannes Gutenberg University Mainz described their surprise upon finding these bizarre tubular tunnels in marble and limestone. "We were surprised ...