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Global Volcanism Program | Image GVP-03197

Mount Shasta, California's highest volcano, dominates the landscape of northern California, forming a prominent backdrop to the Little Glass Mountain obsidian flow from Medicine Lake volcano in the foreground. Photo by Lee Siebert, 1981 (Smithsonian Institution).

Mount Shasta, California's highest volcano, dominates the landscape of northern California, forming a prominent backdrop to the Little Glass Mountain obsidian flow from Medicine Lake volcano in the foreground.

Photo by Lee Siebert, 1981 (Smithsonian Institution).


Shasta