Caves

A limestone cave filled with impressive formations in Mole Creek Karst National Park.

These ancient burial caves carved into the cliffs offer a glimpse into prehistoric funeral practices and Menorca's early inhabitants.

These wave-cut overhangs on ancient Lake Chewaucan contain some of the oldest evidence of human habitation in North America.

Archaeologists continue to debate whether this site yielded the oldest human remains in Japan.

Explore the flooded remains of a limestone mine in Kentucky.

An improbable sinkhole in the sediments flanking the Beaver Dam Mountains.

This remote Scottish cave has been a site of Christian pilgrimage for many centuries.

A complex of ancient Buddhist rock-cut caves with a large, well preserved prayer hall.

Inside a former smuggler's cave, an artificial waterfall and light show.

Once an erosional cave, this scenic arch was lifted up above the sea's surface by an earthquake.

See the imprints of ancient trees, burned and preserved by lava.

The bones of prehistoric animals and early signs of human habitation have been found inside Malta's "cave of darkness."

A small cave network was discovered under a home in Xagħra, in 1924 when the owner was digging a well.

In 1888, a resident of Xagħra, Malta, discovered a small underground chamber filled with stalactites and stalagmites when digging a well.

A former smuggler's haven houses "The Chapel" and its mysterious carvings.

When California condors were hovering on the brink of extinction, this recovery program was charged with helping the birds thrive again.