National Park of Seven Cities - Parque Nacional de Sete Cidades

A cooled lava flow from the Haleakalā volcano formed these surreal-looking columnar basalt structures.

This towering volcanic plug stands out among the dramatic formations that dot this otherworldly desert valley.

These hellish-looking cliffs in the Canadian Arctic have been burning for centuries.

In Northeastern Iceland lies something of an oxymoron: a steaming desert.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

Massive mounds of golden sand look like a desert landscape randomly plopped in an Arctic forest.

Huge spherical rocks in the middle of the prairie.

Scientists use one of the saltiest bodies of water on Earth as a terrestrial base for studying water on Mars.