A hard-to-reach oasis in a desolate corner of Death Valley National Park.

The most northerly active sand dunes in the world have some very rare botanical residents.

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

A canvas of crops grow from vibrant red soil in this terraced farmland.

French scientists make up the majority of the few humans to occupy this remote island in the extreme southern Indian Ocean.

Bohol's mysterious brown hills.

The remains of centuries of copper mining appear like an alien landscape.

The tallest stationary dunes on Earth also happen to sing.

Are these prehistoric metal pipes evidence of alien plumbers? Nope, but they are amazing nonetheless.

These muddy eruptions are less deadly than actual volcanoes but also more holy.

A salty red wasteland in Tanzania is a breeding spot for endangered flamingos.

A desert that rolls right up to the ocean, where it's so dry animals live off the fog.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

The world's most active stratovolcano is almost always erupting.

A lake in the middle of the tundra of Quebec is said to be the purest freshwater lake on Earth.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Natural time capsule containing an alien ecosystem.

Resonant stone, that has been played since prehistoric times.

Mysterious hillside with a continuously burning natural fire.

While it is not equipped to peer into outer space this observatory looks like it was built on the moon.

This Nevada lake holds its titular natural pyramid and, if the legends are true, a number of dangerous spirits.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

The closest thing to Mars on Earth.

When this test site was abandoned, they didn't even bother to take the rocket with them.