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Sahalie and Koosah Falls (8623)-20150220_ILO8623.jpg

These falls mark the terminus of two thick flows of basaltic andesite lava that dammed Clear Lake and moved into the McKenzie River 3,000 years ago. -- Source: USDA
Copyright
© 2015 Ilona Berzups
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4256x2832 / 9.8MB
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NATURE
These falls mark the terminus of two thick flows of basaltic andesite lava that dammed Clear Lake and moved into the McKenzie River 3,000 years ago. -- Source: USDA