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

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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 ...

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 ...

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 — ...