The cave gets wet and has the potential to flood during heavy rain, with a ceiling height in the cavern ranging from 35 ft.

Caves remain unmapped in our know-everything age. They inspire artists, hold ancient secrets and, in the popular imagination, they're the refuge of bandits and terrorists.

Carter Caves State Park Resort, located in northeast Kentucky, offers more than 30 miles of trails and has a cave system of more than 20 caverns, according to the state park's website.

Caves are absolutely pitch black, not like a dark night in the forest. There is no light at all. So you can wave your hand in front of your face and see literally nothing.

The Mulu Caves, located in Gunung Mulu National Park on the island of Borneo, are home to the world's largest cave chamber by surface area, as well as one of the largest cave passages on Earth ...

The cave opened in 1932, making it the longest-run show cave in Iowa. Advertisement Crystal Lake Cave is open on Saturdays and Sundays from 9 a.m. to 5 p.m. and by reservation other days of the week.

The caves there make for especially good lunar lava tube analogues, according to Rossi, because its volcanoes are very young, and its caves don’t have much in the way of soil or vegetation. The ...

Spook Cave is open from May to October with reservations available on weekdays. The website has a calendar that includes first-come, first-served dates. It costs $16 for adults 13 years and older ...

Carter Caves State Park Resort, located in northeast Kentucky, offers more than 30 miles of trails and has a cave system of more than 20 caverns, according to the state park's website.