Caves

Inside this mountain lies several kilometers of breathtaking caves.

Hideout of thieves, monks, and goat-footed gods.

Ancient man-made caves underneath small town Belgium.

Abandoned railroad tunnel is home to a colony of three million Mexican free-tail bats.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

Virgil's many-mouthed gateway to the underworld.

A stunning silver lining to global warming's gloomy cloud.

A salty cave excavated by elephants and the location of a deadly disease vector.

A tunnel of hardened lava along Maui’s famous Road to Hana.

One of the world's largest salt caves is filled with fragile salt sculptures, salt rivers, and huge salt megadomes.

Cave on extinct volcano, once home to famous mathematician Pythagoras.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Man-made cave with enigmatic carvings, some say made by the Knights Templar themselves.

Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.

Cretean quarry suggests real-life site for ancient Greek myth of the man-eating Minotaur in his labyrinth.

Limestone grottoes turns everyday objects into stone.

Once the home of a hermetic monk, this cave now houses a small church.

The world's most famous cheese caves.