Unusual molten rock formations, nicknamed lava eggs, have appeared near an active volcano in Iceland. Some were recently spotted by a geologist, who explained to Reuters how the egg-shaped lobes ...

One of the most intensely watched elements of the ongoing eruption of Hawaii’s Kilauea volcano is an island that mysteriously formed early on in the crater’s fiery lava lake. It’s about seven acres in ...

The mystery of a series of strange, knobby pillars of rock that formed in Iceland has been solved. A creeping lava flow and a stream of water mixed to create hollow, rough pillars that dot the ...

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.

Lava appeared after the U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) announced detection of a a magnitude-4.4 earthquake located beneath Kīlauea Volcano's south flank. This event was ...

A stunning lava lake has formed in the crater of Kīlauea as the USGS and National Park Service monitor the eruption and what could come next. Reading time 1 minute The Canary Islands have a new ...

A group of researchers spent 15 years studying the unique microbial ecosystems within Hawaii’s lava tubes, geothermal caves and fumaroles, stinky sulfurous openings in the Earth’s crust near volcanoes ...

Jupiter's super-volcanic moon boasts grand, meandering dunes created not by wind but by lava flows beneath the moon's surface, a new study shows. Io is Jupiter's third-largest moon and the innermost ...

Special to The New York Times. TimesMachine is an exclusive benefit for home delivery and digital subscribers. About the Archive This is a digitized version of an article from The Times’s print ...