By contrast, lava caves, widely known as lava tubes ... Most of Hawaii’s lava tubes are formed by a type of syrupy flow called pahoehoe. As it pours down the volcano, the lava at the surface ...

Walking into Fingal's Cave is like walking into the heart of the Earth. Here among the towering basalt columns, the visitor stands inside a lava flow. Magma that swelled up from deep in the Earth ...

“Constructional” caves, by contrast, are forged when flowing lava begins to cool, creating a top, crusty layer that solidifies into rock. As the molten lava beneath the crust flows ...

The two are linked as some of the best caves are, in fact, a lava tube, which is a natural tunnel formed by flowing lava ...

In one corner of the flow, located in nearby El Malpais National Monument, is a network of subterranean corridors known as lava tubes: long, winding caves big enough to drive a subway train through.

Crews have reopened a portion of the Loop Road and Lava Flow Campground at Craters of the Moon National Monument and Preserve ...

Data from the Gravity Recovery and Interior Laboratory (GRAIL) support the presence of a network of large, empty caves in the lunar lava flows, with an initially estimated extension of 1-2 km in width ...

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 ...

About 5 miles from downtown Hilo, on Kaumana Drive, you'll find the Kaumana Caves. Originally formed in 1881 by lava flow from Mauna Loa, the caves are now accessible to visitors via a metal ladder.

Recently, he explored caves that are even younger: pristine cavities known as lava tubes, forged inside cooling mounds of molten rock during the eruption of the Fagradalsfjall volcano, in southern ...