Geology

A natural history wunderkammer in the middle of the desert.

The abstract sandstone rock formations at this Algerian national park are rich with prehistoric art.

The inky volcanic sand leads to reefs teeming with aquatic life waiting to be discovered by snorkelers and divers.

Every winter, the wind carves blocks of frozen water into beautiful abstract shapes inside this unusually curved tunnel.

This sun-scorched lakebed contains samples of half the natural elements known to humankind.

Locals say the stone that marks the spot where the gallows once stood can lead you astray.

One North Dakota man's vast collection of rare rocks, polished orbs, and geological wonders.

A mysterious ancient network of thousands of perfectly straight lines stretching across miles of Bolivian desert.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

This quiet park's strange sedimentary spires were named after Kodak's color film.

This set of mysterious petroglyphs in the Peruvian jungle could shed light on centuries-old activities in the region.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

Perhaps the only prehistoric monument with its very own public bus stop.

Conspiracy theories and occult legends surround this mysterious natural rock formation.

The remains of an abandoned dinosaur theme park litter the woods just off the highway.