Victoria Vale said the mysterious door "seemed like it hadn't been opened in a very long time," and she was determined to ...

Nick's Signal Spot explores the untold story of tunnel radio systems that bring AM and FM signals to life below the surface.

Contractors renovating a historic home in Belgium stumbled upon the entrance to a secret tunnel identified by archaeologists as an escape route from World War I. Photos show the long-forgotten yet ...

[GYEONGGI FIRE SERVICES] A man in his 20s who was dramatically rescued a day after the underground tunnel collapse on the ... “The container door was open just before the collapse, so we need ...