Looking for a cool tunnel with no light? Flagstaff has one that was formed by lava.

Add Yahoo as a preferred source to see more of our stories on Google. The Lava River Cave exhaled chilled air. I put on my sweatshirt, despite the hot July day. Though I'd been warned about the sudden ...

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 ...

At a little more than a mile, Lava River Cave is Oregon’s longest intact lava tube. It’s also one of the most popular caves to explore in central Oregon. The cave is part of Bend’s Newberry National ...

No trip to Central Oregon would be complete without exploring one of the region's defining geological features: the vast expanses of hardened lava that diverted the Deschutes, formed mounds of gumdrop ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A large lava tube—a cave formed from a volcanic eruption—was discovered ...

What Iceland’s volcanoes are revealing about early life on our planet Speleologists in metallurgical “cooling suits” emerge from the extreme heat of a lava tube formed by the eruption in 2021 of Mount ...