The Marble Caves sit on the shores of a turquoise glacial lake in southern Chile. Light bounces off the water onto the walls, ...

That gust of cool air is what led two National Park Service employees to stumble upon Crystal Cave while fishing at a nearby ...

If you're looking for a family vacation that involves crawling through caves, hiking underground suspension bridges, or zip ...

More than 57,000 years ago, a human traced their fingertips along the chalky wall of a French cave, leaving shallow, parallel furrows behind. But what species were they?

Archaeologists have concluded that a series of engravings discovered on a cave wall in France were made by Neanderthals using their fingers, some 57,000 years ago. They could be the oldest such ...

The cave walls are 18-feet thick and made of tufa limestone. The cave was formed more than 25,000 years ago via glacial drifts on Lake Michigan, according to the resort.

Boat capsizes during tour of underground cave in Lockport, NY 00:59. LOCKPORT, N.Y. — A boat carrying hospitality workers capsized Monday during a tour of a historic underground cavern system ...

Lockport Cave, a manmade passage carved out of rock in the late 19th century, was used to carry extra water from the Erie Canal to power businesses alongside the waterway.