In South Carolina's Blue Ridge Mountains lies a mysterious 19th-century tunnel that never fulfilled its promise but continues ...

Deep in the Rock Creek Canyon, south and east of Twin Falls, a long-forgotten remnant of southern Idaho history is concealed by a dense patch of poplar and sage. Like its history, the entrance to the ...

Although you may or may not be a spelunking expert, it might be fun to take your friends or members of your family on a trip to explore some of the local caves and caverns South Carolina has to offer.

The post 9 Underground Tunnels in U.S. Cities You Can Explore This Fall appeared first on Author Kathy Haan. This post ...

I explored the Los Angeles secret tunnels that is not open to the public. I walked around trying to explore the secrets of the underground tunnels of LA. Thank you for watching! Subscribe for more ...

What you don’t know: where the other end is, who’s in it, what they’ve left behind. Is it booby-trapped? Is it big enough for a person to walk through? Is the air quality lethal? Who’s on the other ...

The underground tunnel system of Hukok in Lower Galilee provided escape for Jews revolting against Roman rule. A team of volunteers also recently discovered a stash of 22 deliberately hidden—and ...

The city of Cincinnati never finished building its subway in the 1920s, a decision that has long been second-guessed. The subway tunnel not only sits empty but costs city taxpayers money to maintain.