Just north of Flagstaff, an extinct volcano cone and a lava-trail hike are beautiful yet eerie reminders of the brutal forces of nature. Why go: Some 900 years ago, a volcanic eruption spewed ...

Rootless cones are small volcanic landforms ranging from several to several hundred meters in diameter, formed by continuous explosions resulting from the interaction between surface lava and ...

Unlike regular volcanoes originating from magma rising from deep underground, rootless cones form when lava covers a water-containing layer, triggering explosive reactions. Due to this process ...

"Rootless cones form when lava flows over wet or icy ground, causing it to boil and explode," said Dundas. "The region around Athabasca Valles is covered by a huge lava flow field, and seeing ...

A DEADLY volcano that spits bright blue lava contains the world's largest acid lake - capable of melting human skin. Kawah Ijen, is a gargantuan volcano on the island of Java, Indonesia ...

Boasting the largest young basaltic lava field in the contiguous United States, the monument is a volcanic wonderland of cones, vents, fissures, and flows. Though eruptions that forged this ...

Hot lava bubbled and slapped in incandescent waves against the sides of a smaller cone. Occasionally the lava ... surface of the lungs to form sulfuric acid. It was a hazard for anyone working ...

The temperature continued to increase and sulphurous acid made its appearance ... Small quantities of lava issued from time to time from the new cone, and spread over the interior of the crater ...

cones and lavas. Very tourist friendly – spectacular but safe (at that initial stage; i.e. red hot lava streams and lava fountains). The main Eyafjallajokull eruption was under c. 200 m of ice and ...