Just north of Flagstaff, Red Mountain offers hikers a rare opportunity to explore the inside of an ancient volcanic cinder ...

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Explore California’s most underrated national park, where steaming fumaroles, bubbling mud pots, lava fields, and an active ...

Add Yahoo as a preferred source to see more of our stories on Google. Just beyond the eerie dunes that make up the Mojave Desert’s Devils Playground, a glaringly white dome rises up out of the ground.

There is something quietly disorienting about standing in the middle of a high desert and realizing the ground beneath your ...

Volcanoes are grouped into four types: cinder cones, composite volcanoes, shield volcanoes and lava volcanoes. Cinder cones are circular or oval cones made up of small fragments of lava from a single ...

Most volcanoes, loud and pushing, build their cinder cones openly of fiery ash and lava. But a few volcanoes work under cover. Their molten lava never reaches the surface, but quietly pushes up the ...

Wizard Island is a cinder cone volcano in Crater Lake. A black bear explored the island. National Park Service Visitors got lucky when they watched a black bear take a swim in Oregon’s Crater Lake — ...