Caves

This 15th-century cave complex is one of the very few monasteries to stay open throughout World War II and the Soviet regime.

A spiritual sanctuary in a natural cave.

A historic cave in Scotland once served as a hiding place for a famous Covenanter.

The artwork is tucked within a cave on a tiny Scottish island only accessible at low tide.

This Roman quarry once held secret masses and smuggler's contraband and is now home to rare species of bats.

There's a labyrinth of manmade tunnels stretching for over an acre beneath Bristol.

The fishing boats that moor in this small lagoon enter and leave through a tunnel to the sea.

The first recognized Neanderthal remains were found in this now-lost cave in 1856.

Made famous by 'Star Wars,' these troglodyte homes face an uncertain future.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

A hidden tunnel leads to a medieval queen's shrine buried beneath a parking lot.

Suffocating dogs was a common spectacle in the fumes of this noxious cave.

A galaxy of glowworms—larvae of a gnat—hides deep in the belly of these caves.

A sprawling ancient Jewish cemetery with over 30 rock-hewn burial caves.

Take a hidden path to the mouth of the cave to watch millions of bats swarm at sunset.

The only Florida state park with publicly accessible caves.