Sprague River Valley Volcano - John Seach
Oregon, USA

42.50 N, 121.50 W
summit elevation 2449 m
Shield volcanoes, maars, cinder cones, domes

The Sprague River is located east of the Cascade Range.
The volcano has more than 23 maars which resulted from the interaction of magma with groundwater.
The two youngest volcanoes are Saddle Mountain and Taylor Butte.

Volcanic Features of Sprague River Valley Volcano
Bug Butte, Council Butte, Fuego mountain, Calimus Butte, Saddle Mountain, Taylor Butte.

Eruptions of Sprague River Valley Volcano
1.5 million years ago
 

Sprague River Valley Volcano
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