. "USGSMammoth Mountain" . "3368.95"^^ . . . . . "Mammoth Mountain is a lava dome complex west of the town of Mammoth Lakes, California, in the Inyo National Forest of Madera and Mono Counties. It is home to a large ski area on the Mono County side.Mammoth Mountain was formed in a series of eruptions that ended 57,000 years ago. However, Mammoth still produces hazardous volcanic gases that kill trees and caused ski patroller fatalities in 2006."@en . "1260Z"^^ . . "500.177"^^ . . . "Mammoth Mountain"@en .