See a sandstone wave

Explore sandstone domes, cliffs, canyons, and the Waterpocket Fold in Capitol Reef National Park.

Descend into vast limestone caves and desert landscapes at Carlsbad Caverns National Park.

Experience salt flats, dunes, canyons, mountains, and extreme desert landscapes in Death Valley National Park.

See fossilized trees, painted desert badlands, ancient sites, and Triassic landscapes in Petrified Forest National Park.

Discover Northern Ireland's hexagonal rock formations

Explore the stunning underground landscapes of Carlsbad Caverns in New Mexico, USA

Explore the unique underground labyrinth of Wind Cave National Park, known for its boxwork formations and one of the longest caves in the world

Visit Yanar Dag, the burning mountain in Azerbaijan, where natural gas fires have been burning continuously for centuries