Many believe these images represent interstellar lifeforms.

This sign designates the road that leads to the infamous Area 51.

A large, remote national monument highlights the typical geologic structure seen in Nevada.

The eerie ruins of an isolated abandoned town nicknamed "the Widowmaker" for its deadly gold mine.

One of the few remaining indigenous petroglyph sites in Nevada.

This mesmerizing and surreal landscape features intricate patterns of white and red sandstone.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

This balancing rock is one of Utah's most unusual geological formations.

This site is home to ancient petroglyphs and pictographs dating back to 6,000 B.C.

A spectacular overlook of the Little Grand Canyon of the San Rafael River, a deep sandstone gorge streaked with orange, red and white in a remote, uncrowded part of Utah.

These tall, red sandstone pinnacles outside Moab are often forgotten amid their more famous neighbors.

The location where the iconic movie character declared it was time to go home.

It's safe—and permitted—to walk across these twin natural sandstone arches.

Within the former ghost town of Cisco is a carefully restored tiny town with one resident and its own art residency.

This gallery of prehistoric red ochre art lines the wall of a scenic segment in Utah's San Rafael Swell.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

A striking, menacing sandstone peak towering above a landscape that's equal parts Mordor and the Moon.

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

A tunnel with windows, so you don't miss out on the impressive views.

The fifth-longest natural arch in the world, and the longest outside China.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The cinder cone volcano with a less than complimentary name.