An abandoned whaling station on an active volcano offers hot springs in Antarctica, surrounded by ruined giants of industry.

Splashes of blue in an otherwise monotonous lunar landscape.

Mysterious spherical rocks in the semi-desert of western Kazakhstan.

Lunar landscape, a mud volcano and bizarre rock formations.

The villagers of the coldest inhabited place on Earth adjust to unique challenges presented by day-to-day living.

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

Fire meets ice at the southernmost volcano on Earth.

A fiery-red region of scooped out land still largely untouched by civilization, tourists or otherwise.

Think you have a tough job? Try carrying 200 kilos through a cloud of sulfur down the side of a volcano.

A breathtaking canyon offers stunning views and frightful pathways through an ecological paradise.

Mount Nyiragongo has erupted at least 34 times since 1882 and is home to the world's largest lava lake.

From the sky, a kaleidoscope of color brightens the grey landscape of the San Francisco Bay.

This peculiar lake of pitch is so thick and viscous that one can walk on its surface.

Unexplained bald patches in the landscape grow and recede over time, as though they are somehow alive.

One of the most extreme deserts in the world, these snow-free valleys harbor life, despite the hostile environment.

The Twisted Trees of Alticane are an unnerving grove of Quaking Aspen, apparently mutated from a single source, giving them a twisted and unnatural appearance.

In a long-dry lake bed, these groups of massive stone pillars bear a striking resemblance to clumps of everyone's favorite fungi.

Considered the birthplace of the Copper Age and Bronze Age, the river is tinted red from 5,000 years of mining.

"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

Remote, volcanic island that Darwin, Hooker, and the Royal Navy shaped into a thriving, artificial ecosystem.

A valley of unique erosion patterns lends to a view like nothing on Earth.

A sulfuric martian landscape that looks far better than it smells.

Steaming blood-red hot spring from hell.

Oregon's unexpected high desert, displaying layers of time in a colorful show.