Volcanoes

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

Twisted girders are all that remain of an Icelandic bridge that was wiped out by a combination of volcanic heat and glacial floods.

Plains of ash and pair of semi-active volcanoes contribute to the otherworldly beauty of this little-known Vanuatu island.

This Portuguese bullring is built right into the caldera of an island volcano.

This tumultuous Icelandic lava field looks so alien European researchers want to use it as a stand-in for Mars.

This scenic Icelandic lava flow is named for a pair of Berserkers who were murdered, according to a famous Saga.

An Icelandic island full of diving birds and legend.

Climbing Iceland's highest peak on the rim of the Oræfajökull volcano.

This dormant volcanic crater has been converted from a roiling pit of magma to a pleasant hiking spot.

Take respite inside this jaw-dropping church while climbing the volcano where Georgia's Prometheus was once chained.

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

A centuries old castle atop a dormant volcano houses museums devoted to both women and witches.

Climb right into the heart of this colorful Iceland volcano.

The artist James Turrell is repurposing an extinct volcano crater as an observatory to experience the cosmos.

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