A jungle inside a cave? A roof collapse long ago in Hang Son ... Great Wall and begin ascending a staircase of rock toward the exit. “Will ye look at deese!” roars Clarky, kneeling beside ...

There are renewed concerns in Modesto after a fire was set inside a cave along the Tuolumne River. It's among the latest ...

Walking into Fingal's Cave is like walking into the heart of the Earth. Here among the towering basalt columns, the visitor stands inside a lava flow. Magma that swelled up from deep in the Earth ...

The frigid, winter weather has provided the rare opportunity to step inside and explore stunning caves carved under the ice. Melting water from the glacier creates the twisting tunnels as it ...