Sugarloaf Peak Sugarloaf Peak is a distinctive 9,297-foot (2,834-meter) volcanic summit on the northeastern side of the San Francisco Peaks near Flagstaff, Arizona. Unlike the towering remnants of the main San Francisco Mountain stratovolcano, Sugarloaf is a younger rhyolite lava dome that formed near the entrance to the mountain’s Inner Basin. Its rounded shape, volcanic …
