This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

Walk 2,300 feet above the ground on the "Troll's Tongue."

A serpentine highway twists and turns over the treacherous Norwegian Sea.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

Climb right into the heart of this colorful Iceland volcano.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

Rising from the sea like a stone monster.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Medicinal spa created with the discharge from a geothermal energy plant.

A gateway to a mysterious network of underground tunnels.

A toxic lake near a volcanic caldera that is home to flamingos and other life.

The inspiration for the Patagonia Clothing logo, Cerro Fitz Roy turns pink at sunrise.

Once swallowed by flood waters, this village has emerged as an eerie shadow of its former self.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

This stunning mass of ice spans 121 square miles and is still growing.

A fantastical group of cliffside stairways, bridges, and twisting paths carved out of stone provide a surreal coastal hike.

One of Chile's most active volcanoes is riddled with beautiful caves.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.