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 ...

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, ...

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

Scientists have for the first time discovered a cave on the Moon ... or billions of years ago when lava flowed on the Moon, creating a tunnel through the rock. The closest equivalent on Earth ...

LagOmar Museum is an art gallery and restaurant, built into the side of a cave in Nazaret in the 1970s ... with steps across multiple levels of rock. There are a number of hidden rooms and ...