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 ...

Sometimes, a hole in the ground is just a hole. Other times, it’s a portal to an underground cave spanning miles in width and length. You don’t really know what’s inside unless you dive into the void.

FLAGSTAFF — Did you know Flagstaff is home to one of the largest lava tube caves in the country? The Lava River Cave in the Coconino National Forest stretches over a mile underground and was formed ...

In the not-too-distant future, the search for signs of life on Mars and the moon could see the next generation of robots exploring a new frontier: subsurface lava tubes. These missions could also help ...

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 ...

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 ...

NEAR FLAGSTAFF, Ariz. (FOX 10) --There are many popular hiking trails in and around Flagstaff. One of those trails, completely underground, is considered a volcanic wonder. Just west of Snowbowl, ...

A couple in Oregon are selling a house with an added extra room – a large underground lava cave. On Sunday, Suzanne and James Brierley told local news outlet KTVZ 21 they brought the property and ...

BEND, Ore. (KTVZ) -- Lava River Cave, located in the Newberry National Volcanic Monument south of Bend on the Bend-Fort Rock Ranger District, will be closing early this season to allow work in the ...