Dozens of small earthquakes have been shaking Mount Spurr, raising concerns that the 11,000-foot volcano in Alaska, United States, may erupt soon. Mount Spurr is a snow- and ice-covered stratovolcano located about 100 kilometers west of Anchorage in the Cook Inlet region, United States. It lies at the southern edge of a gap in the Alaska Range and is mostly made of andesite rock. The volcano includes a lava dome, a breached stratovolcano, and the Crater Peak vent, a small volcanic cone. It has a 3,000-meter elevation with a 5x6 km caldera, formed after a crater collapse 10,000 years ago creating Chakachamna Lake. The caldera holds an active icefield and many glaciers. Mount Spurr last erupted in 1992, causing major ashfall and disrupting air travel.
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