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UpstateCA - Little Glass Mountain Little Glass Mountain is more than a pile of glossy rubble. The volcanic glass flow has been used by indigenous people for hundreds of years for the
Glass Mountain, Modoc National Forest, Northern California
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Glass Mountain obsidian flow at Medicine Lake volcano, CA. | U.S. Geological Survey
Glass Mountain, Modoc National Forest, Northern California
Glass Mountain : Climbing, Hiking & Mountaineering : SummitPost
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Explore Little Glass Mountain and Mount Shasta, CA from above in the sky. - YouTube
Glass Mountain obsidian flow, Medicine Lake volcano | U.S. Geological Survey
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Glass Mountain Trail - Discover Siskiyou
Glass Mountain Trail - Discover Siskiyou
Hiking Glass Mountain, California
Little Glass Mountain Photograph by Marnie Patchett - Pixels
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Glass Mountain Trail: 20 Reviews, Map - California | AllTrails
Glass Mountain (California) - Wikipedia
