Image The story of Sunset Crater's explosive eruption Read more Image Winter 2018 - First Snow Read more The story of Sunset Crater's explosive eruption Winter 2018 - First Snow Geologic cross section of the Flagstaff area, northern Arizona Looking south towards San Francisco Peak San Francisco Peaks - October 2018 Autumn in San Francisco volcanic field, Arizona San Francisco Peaks, Flagstaff, Arizona Inner Crater of the San Francisco Peaks Touring the San Francisco Volcanic Field, northern Arizona San Francisco Peaks at sunset, January 2017 Revisiting the 2010 Schultz Fire, San Francisco Peaks, Arizona San Francisco Peaks Sunset San Francisco Peaks Inner Basin Quaking aspens of San Francisco Mountain in full bloom Sugarloaf Dome pumice mine
