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Mount Shasta, a steep-sided Cascade Range stratovolcano in Northern Ca

By Communications and Publishing 2018 (approx.)
Brown landscape with volcano in the background
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Detailed Description

Mount Shasta, a steep-sided Cascade Range stratovolcano in Northern California, looms above Little Glass Mountain, a thick obsidian flow erupted from the Medicine Lake shield volcano about 1,000 years ago. These are just two of the young volcanic areas monitored by the USGS California Volcano Observatory. USGS photo.

Sources/Usage

Public Domain.