Video shows dangerously close footage of the very active Klyuchevskoy volcano in Siberia. A group of climbers braved the active volcano and captured mesmerizing video of a new cinder core. Cinder ...

Video shows dangerously close footage of the very active Klyuchevskoy volcano in Siberia. A group of climbers braved the active volcano and captured mesmerizing video of a new cinder core. Cinder ...

Across the Lassen Peak area, small to moderate-rated eruptions that result in basaltic lava flows and regional ash falls are most common. Cinder cones can typically rise as high as 1,000 feet (305 ...

The nearly symmetrical cone of Sunset Crater rises above the surrounding forested floor some 1,000 feet (300 meters). The main crater at the summit of the cone measures nearly 400 feet (120 m ...

Why go: Some 900 years ago, a volcanic eruption spewed lava and ash that spread for miles and formed the red cinder cone known as Sunset Crater. It's perhaps the most recognizable of the 600 or so ...

Video shows dangerously close footage of the very active Klyuchevskoy volcano in Siberia. A group of climbers braved the active volcano and captured mesmerizing video of a new cinder core. Cinder ...

Cinder cones are "are large mounds that develop around volcanic vents, made up of tiny pieces of falling lava that get distributed during an eruption," according to the National Park Service ...