Crooked River Caldera

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Age of rock	Ma
Locations	Deschutes
	Crook
	Jefferson
	Oregon
	U. S.
Date of Reg.	2019-12-21 18:01:13
Date of Upd.	2023-02-01 22:30:26
ID	2002951

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About Crooked River Caldera

The Crooked River caldera is a large and ancient volcano that straddles three central Oregon counties. The diameter of the caldera is about 41 km x 27 km and is notable for the welded tuff present at Gray Butte, Smith Rock, Powell Buttes, Grizzly Mountain and Barnes Butte.