Here are seven underground attractions, mines, caves, catacombs, concrete bunkers and tunnels that are well worth a visit - ...

In the ongoing effort to establish a permanent lunar base where humans can live and work on the moon, scientists have ...

Located in Abkhazia, Georgia, the Veryovkina Cave has a depth of 2,212 metres, making it the world’s deepest cave. It was first discovered in 1968 by cavers from the Russian city of Krasnoyarsk.

Beneath your feet lies one of Cardiff's most closely-guarded secrets: an extensive network of underground caves, arguably the largest in any UK city. These caverns hold their own mysteries ...

Carlsbad Caverns is home to some of the most spectacular examples of underground geologic features found anywhere in the United States. Located in southeastern New Mexico, the park contains more than ...