Image:MtChurchill-CalderaRim.jpg

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Description	U.S. Geological Survey climbing party reaching the east rim of the summit caldera on 4,766-m (15,636 ft)-high Mount Churchill, site of two of the most voluminous explosive eruptions in North America in the past 2,000 years. Blocky debris in the photo consists of pumice and lithic fragments ejected 1,250 years ago. This deposit forms the eastern lobe of the White River Ash.
Source	http://pubs.usgs.gov/dds/dds-39/
Date	May 20, 1990
Author	G. Dubois, U.S. Geological Survey
Permission	This image is a work of a United States Geological Survey employee, taken or made during the course of the person's official duties. As a work of the United States Government, the image is in the public domain. For more information, see the USGS copyright policy.

[edit] Licensing

This work is in the public domain in the United States because it is a work of the United States Federal Government under the terms of 17 U.S.C. § 105. See Copyright.

Note: This only applies to works of the Federal Government and not to the work of any individual US state, territory, commonwealth, county, subdivision, or municipality.

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(del) (cur) 11:55, 10 March 2007 . . Seattle Skier (Talk | contribs) . . 1024×711 (236,049 bytes) ({{Information |Description= U.S. Geological Survey climbing party reaching the east rim of the summit caldera on 4,766-m (15,636 ft)-high Mount Churchill, site of two of the most voluminous explosive eruptions in North America in the past 2,000 years. Blo)