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 ...

Early herdsmen were using a volcanic lava cave to shelter from the fierce desert sun at least 7,000 years ago, reveals new research. Bones, etchings and other artifacts discovered in what is now ...

Oregon is home to some of the best examples of deep caves and ancient lava beds formed ages ago from the many volcanoes in ...

Others formed tens of thousands of years ago. Recently, he explored caves that are even younger: pristine cavities known as lava tubes, forged inside cooling mounds of molten rock during the ...

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 ...

Here's a look at some of the most amazing cave explorations along Iceland's remote coastlines. Located in Snaefellsnes ...

In one corner of the flow, located in nearby El Malpais National Monument, is a network of subterranean corridors known as lava tubes: long, winding caves big enough to drive a subway train through.

It includes Geomunoreum, regarded as the finest lava tube system of caves anywhere, with its multicoloured carbonate roofs and floors, and dark-coloured lava walls; the fortress-like Seongsan ...

The cave was supposedly formed about 960 years ago from hot lava that cooled to form a top layer, and then once the lava stopped flowing, it created a tube. Don't worry, there are no bats or ...

Since the cave ecosystem is so large and fragile, the only way to explore the Undara Lava Tubes is on a guided tour. Undara Experience’s Savannah Guides run three different tours, including a ...