Ash Flow tuff, Crater Lake, (vertical)April 30, 2017/in Extrusive, Igneous, Igneous Rocks, Volcanic activity/by Marli Miller differential erosion, volcanic, pyroclastic, weathering, RGO, Cascade volcanoes https://geologypics.com/wp-content/uploads/2017/04/geologic-time-pics-logo-300x115.png 0 0 Marli Miller https://geologypics.com/wp-content/uploads/2017/04/geologic-time-pics-logo-300x115.png Marli Miller2017-04-30 20:09:312021-10-19 05:10:27Ash Flow tuff, Crater Lake, (vertical)