Mammoth Mountain

www.sfgate.com March 8th … ‘Study sheds new light on Mammoth Mountain’s age’ is not about mammoths but a mountain that has a secondary role as a ski resort. Stanford University geologists say that the mountain itself is an old volcano, 11,000 feet at it’s summit and came into being some 68,000 years ago. It formed very rapidly, the story continues, but a string of nearby volcanoes whose eroded domes can be seen as part of the mountain massif, formed less than 9000 years ago – in the Holocene.