For years, scientists believed that the colorful deposits found in lava caves around the world were mineral deposits, but more recently they’ve discovered that the collections — ranging from ...

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 drop in temperature to a crisp 42 degrees, it was hard to believe I'd ...

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 ...

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 ...

A popular hiking trail in western New Mexico that features ancient lava flows and bat-filled caves will be closed through most of 2026 during a trail improvement project, the National Park Service ...

Scientists have long theorized the existence of lunar caves — underground passageways formed through volcanic processes that are connected to the pits covering the moon’s surface. Now, a team of ...

The recent discovery of a lunar lava tube hints at a hidden network of caves that could provide shelter for future explorers. NASA's Lunar Reconnaissance Orbiter (illustrated with Earth in the ...