A diver explores dangerous underwater caves and uncovers hidden worlds beneath the surface ...

Perhaps the most well-known New Mexico cave, Carlsbad Caverns is located in the Guadalupe Mountains in the southeastern part ...

So many of the hidden spots in Mammoth Cave National Park lie beneath the surface. This popular park in Kentucky is home to the world's longest known cave system, and it draws thousands of visitors ...

Add Yahoo as a preferred source to see more of our stories on Google. Looking for an adventure that’s cool (literally) and completely out of the ordinary? The United States is home to some of the ...

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Cave City, the home to Mammoth Cave National Park, is giving visitors reason to stop and explore. Cave City in Barren County is home to Mammoth Cave National Park. Over the years, the city has gone ...

Following recent tragedies in both the Maldives and the UK, experts are issuing safety warnings for those planning on ...

In the not-too-distant future, the search for signs of life on Mars and the moon could see the next generation of robots exploring a new frontier: subsurface lava tubes. These missions could also help ...

Africa is home to some of the most amazing cave diving experiences, giving divers a chance to explore the continent's hidden ...