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 ...

Hawaii is home to some of the most incredible lava tubes that are open to exploration. These include Thurston Lava Tube in ...

Beneath Mount Erebus, researchers have found a hidden underground ecosystem that could rewrite history. This hidden world may even provide clues about extraterrestrial life. Mount Erebus, located on ...

Approximately 700,000 years ago when molten rock erupted from a vent in nearby Hart Prairie, the mile-long Lava River Cave was formed. Today, visitors can explore the cave's cool, dark expanse by ...

The Canary Islands not only boast the third largest volcano in the world, but also the largest natural underwater lava tunnel ... and a blend of dry and submerged cave sections.

“Amazing” lava fountains were seen spewing from the Kilauea volcano’s Halemaʻumaʻu crater in Hawaii during an eruption on March 4, marking episode 12 of a period of activity that began in December.