Cloudcap - Prominent Geological Features of Crater Lake National Park

 

The topmost lavas on the caldera wall overlooking Cloudcap Bay are glassy dacites not unlike those of the Llao, Grouse Hill, and Cleetwood flows. They were likewise erupted after the andesitic phase of Mazama's activity had come to an end. Two main flows may be distinguished: an older one to the south, which seems to have had its source beneath Cloudcap, and a much thicker flow farther north, the Redcloud flow, which escaped from a vent on the caldera wall. The relations between them are indicated on the panorama .... [The Northern Arc of Vents: Dacites of Redcloud and Cloudcap, The Geology of Crater Lake National Park, Oregon (1942) by Howell Williams]

View east with Mount Scott in background, Redcloud Cliff at upper left (v-shaped flow formation), and Cloudcap (green tree cover) at upper center above pumice castle (orange rock formation in caldera wall), photo by Robert Mutch

1. Applegate Peak 2. Bald Crater 3. Cloudcap 4. Crater Lake Caldera 5. Crater Peak 6. Desert Cone 7. Devil's Backbone 8. Dutton Cliff 9. Eagle Crags 10. Garfield Peak 11. Godfrey Glen 12. Grouse Hill 13. Hillman Peak 14. Kerr Notch 15. Llao Rock 16. Llao's Hallway 17. Maklaks Crater 18. Mazama Rock 19. Mount Scott 20. Palisades 21. Phantom Ship 22. The Pinnacles 23. Pumice Castle 24. Pumice Desert 25. Pumice Point 26.  Red Cone 27. Redcloud Cliff 28. Rugged Crest Scoria Cone Scott Bluff Sentinel Rock 29. Skell Head 30. Sun Notch 31. Timber Crater 32. Union Peak 33. Watchman 34. Williams Crater 35. Wineglass 36. Wizard Island Note: the numbers associated with each feature name above correspond to their place on the Custom Google Map below

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