The San Francisco Peaks are a volcanic mountain range in north central Arizona, just north of Flagstaff and a remnant of the former San Francisco Mountain. The highest summit in the range, Humphreys Peak, is the highest point in the state of Arizona at 12633ft in elevation. The San Francisco Peaks are the remains of an eroded stratovolcano. An aquifer within the caldera supplies much of Flagstaff's water while the mountain itself is in the Coconino National Forest, a popular recreation site. The Arizona Snowbowl ski area is on the western slopes of Humphreys Peak, and has been the subject of major controversy involving several tribes and environmental groups.GeographyThe six highest individual peaks in Arizona are contained in the range: Humphreys Peak, 12633ftAgassiz Peak, 12356ftFremont Peak, 11969ft Aubineau Peak, 11838ft Rees Peak, 11474ftDoyle Peak, 11460ft The mountain provides a number of recreational opportunities, including wintertime snow skiing and hiking the rest of the year. Hart Prairie is a popular hiking area and Nature Conservancy preserve located below the mountain's ski resort, Arizona Snowbowl.