The Gas They Pass U.S. Department of the Interior U.S. Geological Survey Fumarole on northwest side of Fourpeaked Mountain. Yellow staining on snow is

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Date: 2011-02-10 19:20:38 Stratovolcanoes Aleutian Range Katmai National Park and Preserve Fourpeaked Mountain Mount Okmok Volcano Caldera Volcanic ash Fumarole Geology Volcanology Igneous petrology		The Gas They Pass U.S. Department of the Interior U.S. Geological Survey Fumarole on northwest side of Fourpeaked Mountain. Yellow staining on snow is Add to Reading List Source URL: pubs.usgs.gov Download Document from Source Website File Size: 883,50 KB Share Document on Facebook

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