Caves

This coastal rock formation resembles a churning cauldron at high tide.

Canada’s longest cave system is home to creatures found nowhere else on the planet, as well as rare cave pearls.

A small cave with a larger-than-life legend.

Surrounded by natural bridges, this picturesque waterfall drops hundreds of feet into an underground cave.

An improbable set of attractive limestone caverns forms the centerpiece of Providence Mountains State Recreation Area, in the heart of the Mojave Desert.

This lava tube cave was once a Cold War fallout shelter.

A large lava tube that can be walked through with no special equipment.

Ancient rock-cut caves adorned with Buddhist inscriptions and sculptures.

These caves are full of coffins, but we can't say who the bodies belong to.

Mysterious texts covered in mystical symbols were found in caves at this site centuries ago.

Halfway up a volcano at the edge of the world’s largest salt flats is a cave with seven mummies.

Ghostly specters are said to haunt this secluded cave where a famed Wampanoag leader spent the final days of his life.

This 470-meter-long dripstone cave was discovered by chance in 2006.

An icy behemoth that towers over you with a blue ice cave in the winter and a roaring creek in the summer.