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Live Science on MSNYosemite's ultra-deep canyon may have been carved in part by a ghost volcano and river, provocative research suggestsA river that drained the slopes of a now-vanished volcano may have carved Yosemite Valley's depths during the last 10 million ...
From orbit, Emi Koussi’s dramatic caldera and lava-scarred slopes hint at its fiery past, while dried lakebeds and erosion ...
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