Mount Shasta is a potentially active volcano at the southern end of the Cascade Range in Siskiyou County, California.
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Mount Shasta is a potentially active volcano at the southern end of the Cascade Range in Siskiyou County, California.
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Mount Shasta has an estimated volume of 85 cubic miles, which makes it the most voluminous stratovolcano in the Cascade Volcanic Arc.
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Mount Shasta is connected to its satellite cone of Shastina, and together they dominate the landscape.
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Mount Shasta's surface is relatively free of deep glacial erosion except, paradoxically, for its south side where Sargents Ridge runs parallel to the U-shaped Avalanche Gulch.
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At the time of Euro-American contact in the 1820s, the Native American tribes who lived within view of Mount Shasta included the Shasta, Okwanuchu, Modoc, Achomawi, Atsugewi, Karuk, Klamath, Wintu, and Yana tribes.
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Smithsonian Institution's Global Volcanism Program says that the 1786 eruption is discredited, and that the last known eruption of Mount Shasta was around 1250 AD, proved by uncorrected radiocarbon dating.
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The first recorded ascent of Mount Shasta occurred in 1854, after several earlier failed attempts.
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In 1877, Muir wrote a dramatic popular article about his surviving an overnight blizzard on Mount Shasta by lying in the hot sulfur springs near the summit.
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Early resorts and hotels, such as Shasta Springs and Upper Soda Springs, grew up along the Siskiyou Trail around Mount Shasta, catering to these early adventuresome tourists and mountaineers.
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Mount Shasta was declared a National Natural Landmark in December 1976.
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Lore of some of the Klamath Tribes in the area held that Mount Shasta is inhabited by the Spirit of the Above-World, Skell, who descended from heaven to the mountain's summit at the request of a Klamath chief.
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Mount Shasta has been a focus for non-Native American legends, centered on a hidden city of advanced beings from the lost continent of Lemuria.
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About 200 years ago the last significant Mount Shasta eruption came from this cone and created a pyroclastic flow, a hot lahar, and three cold lahars, which streamed 7.
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