Evaluate
Our Service
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Deschutes National Forest
1001 SW Emkay Drive
Bend, OR 97702
(541) 383-5300
Ochoco National Forest
3160 N.E. 3rd Street
Prineville, OR 97754
(541) 416-6500
Crooked River National Grassland
813 S.W. Hwy. 97
Madras, OR 97741
(541) 475-9272
Geology
Oregon Volcanoes
Mt. Washington Volcano
SUMMARY
Type: shield volcano Activity: extinct Last Eruption: estimated about 250,000 yrs ago Rock Type: basalt to basaltic andesite Eruptive Volume: ? cu km Latitude: 44.33 N Longitude: 121.84 W Location Maps: from TIGER Mapping Service