A cave collapse is a severe and often sudden geological hazard caused by the failure of a roof or wall arch, where massive rocks and debris fall and can block entire passages. Rockfalls are ...

Deep inside a remote Mexican cave, a pair of explorers thought they had stumbled on modern litter, the kind of plastic and debris that too often mars even the most isolated landscapes. Instead, they ...

An explorer of the Mammoth Cave system in Kentucky who died 100 years ago is credited with the creation of the national park. A national park in Kentucky has the longest known cave system in the world ...

A national park in Kentucky has the longest known cave system in the world. This week, Floyd Collins is being remembered there. He was an explorer whose death a century ago became an international ...