With its iconic mountains, rivers, and coastline, it’s easy to overlook the adventure of discovering some of Oregon’s ...

Lavacicles, a common feature, are squeezed out of a lava tube’s roof by gases under high pressure and then cooled mid-drip. The gooey appearance of a rock wall in Manu Nui cave was formed when ...

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 ...

Lava tube caves take you deep into ancient volcanoes, where molten rock once carved tunnels in the earth. These underground ...

drawn in charcoal deep inside the tunnels of Dunbar Cave State Park, etched into the lava rock in Hawaii Volcanoes National Park, and chipped into the stone along the frigid beach at Petroglyph ...

Hallmundarhraun, just a few hours’ drive from Reykjavík, is riven with lava tubes which form when fresh molten rock flows through ... But the cave is no minor feature. It is giant-scaled, ...

I’ve been asked by my fellow explorers to get some rock samples from Mount Vesuvius, but it’s an active volcano, so I’ll need to watch out for things like lava flow. Lava is very hot molten ...