Stunning Photos of Alaska's Veniaminof Volcano

A recent helicopter ride over an active volcano resulted in spectacular images of steam, lava and ash billowing from Alaska's Veniaminof volcano. The 8,225-foot-tall (2,507 meters) volcano has erupted on-and-off since June 13, melting snow and ice and strewing ash and volcanic debris across the summit.

On Aug. 18, geologists from the Alaska Volcano Observatory (AVO) and Dickinson College in Pennsylvania flew over the summit to survey the ongoing eruption. Photos taken during the flight show a cone built above the active volcanic vent inside Veniaminof's caldera, a giant crater formed during a massive eruption about 3,700 years ago. Steam rises from the foot of the cone, where streaming lava melts snow and ice. Ash rises in bursts from the vent, according to the AVO's Veniaminof report. The cone is about 1,080 feet (330 m) tall, the AVO said.

Aerial view of the erupting intracaldera cone at Veniaminof, Aug. 18, 2013. This photo shows new lava flows produced since the eruption started on June 13. These flows, roughly 3000 feet (900 meters) long, have descended the southwest flank of the cone and traveled onto the ash-covered snow and icefield. Melting of the snow and ice has created the depressions beneath the young flows.

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Becky Oskin covers Earth science, climate change and space, as well as general science topics. Becky was a science reporter at Live Science and The Pasadena Star-News; she has freelanced for New Scientist and the American Institute of Physics. She earned a master's degree in geology from Caltech, a bachelor's degree from Washington State University, and a graduate certificate in science writing from the University of California, Santa Cruz.