Washington's biggest lava tubes get all the glory, but this tight squeeze near the state's most famous volcanic cave is worth ...

Take a winter road trip from Iceland’s second city, Akureyri, through a northern peninsula framed by fjords and punctuated by ...

Take a winter road trip from Iceland’s second city, Akureyri, through a northern peninsula framed by fjords and punctuated by ...

Deep in Central Oregon lies a short yet unnervingly narrow lava‑tube hike full of basalt corridors and tight passages where ...

Immersed in Iceland’s remote moonscapes, Hotel Húsafell is about two hours outside of Reykjavík, flaunting dark night skies ...

We’ve known for quite some time that molten rock gouged enormous tunnels into the surface of the Earth, the Moon, and Mars. In fact, scientists have proposed that the vast lava tubes under the surface ...

We now know for sure that massive underground tunnels, carved by lava, exist on Venus – and they are surprisingly wide and different from those on any other planet. It is uncontroversial that lava ...

After a convenient pick-up in Reykjavik, head out of the city and straight to the exploration part of the day. You will start by experiencing the depths of Raufarhólshellir, also known as The Lava ...

Iceland’s volcanoes might have an unexpected new purpose. An architect duo want to harness eruptions to shape the houses and cities of the future. Arnhildur Pálmadóttir has always been fascinated by ...

In this edition of the Explore Oregon Podcast, host Zach Urness talks to outdoors intern Rose Shimberg about two of Oregon's subterranean destinations. Urness and Shimberg talk first about the Lava ...

COPENHAGEN, July 16 (Reuters) - A volcano erupted on Wednesday in southwest Iceland, authorities said, with live media images showing it belched smoke and dramatic flows of glowing hot yellow and ...