With its year-round sun and excellent visibility, the waters of the Caribbean offer some of the best scuba diving in the ...

SAN VICENTE PACAYA, Guatemala -- It's the only place in the world where you can hike up a volcano and once done, enjoy an artisanal pizza cooked inside a volcano! Based in Guatemala, Pizza Pacaya was ...

A moon exploration simulation with robots was conducted in a Jingbo Lake volcanic lava cave in China. Research indicates that ...

Centuries of eruptions on the Big Island have created hidden networks of passages beneath volcanoes. In December 2016 a large lava delta formed by Kilauea volcano sank into the sea, exposing the mouth ...

The Chauvet-Pont D'Arc cave is one of the most famous underground caverns in the world, housing one of the oldest and best-preserved collections of prehistoric cave paintings ever discovered. Now, ...

Another world greets you just a short 30-minute drive from the Icelandic capital Reykjavik. Raufarhólshellir Lava Tunnel is a terrific example of a lava cave created following a volcanic eruption ...