Scientists have found ancient nail tooth shark fossils deep inside Mammoth Cave in Kentucky, revealing new information about ...

Its grooved walls took shape in the wake ... battled developers trying to build atop burial caves, says that whenever human remains are found inside a lava tube, they render the entire cave ...

The wall lies more than a mile away at the end ... where humidity rises into cool air and forms clouds inside the cave. Clarky ascends the rope next, then yells down for me, the words bouncing ...

These early artists decorated walls of caves with delicate ... Because the paintings are often found deep inside caves in spots difficult to get to, it's likely that they were rarely visited ...

Inside a temple cave in Thailand, a “slender” creature with “large,” golden eyes perched on the wall. Visiting scientists spotted the scaly animal hiding in plain sight — and discovered ...

Discovered in 1999 inside an abandoned mine in Southern Spain, Pulpí Geode is the largest crystal 'cave' of its kind in ... redesigned for a new generation. Wall Street opened sharply lower ...

With high carbon dioxide, low oxygen and no photosynthesis, here’s how an entire ecosystem persists in Movile Cave, one of the most extreme environments on Earth.

Park officials reported floodwaters rose to the highest level ever recorded inside the 800-year-old ... moved 20 feet and shoved against the cave wall. Park Rangers are assessing the damage ...