In the absolute darkness 333 feet beneath Tennessee's Cardwell Mountain, I am belly-crawling through a passage barely wider than my shoulders, headlamp cutting through blackness so complete it seems ...

When it's too hot to consider outdoor sports, don't just hit the gym -- head underground. Within half a day's drive of the D.C. area, you can find dozens of "wild" caves, where the adventurous can ...

Local cavers detail the beauty of caves and what fuels their passion to keep exploring. The Central Indiana Grotto is a group of cavers who meet monthly in Indianapolis. Each year they host an event ...

CAPE GIRARDEAU, Mo. -- Eleven teenagers traveled to Perry County, Saturday, Oct. 4, to participate in wild caving for the first time in their lives. The "Caving in Conservation" program was one of the ...

Emerald Cave, a small grotto on the Colorado River, is accessible by kayak, canoe or paddleboard. The cave's green shimmer is caused by sunlight reflecting off the canyon walls and underwater algae.