Mammoth Mountain

  • The most prominent geological feature in the area, 11,053-foot Mammoth Mountain is a dormant composite volcano formed by a series of eruptions between 220,000 and 57,000 years ago. Steam-blast eruptions occurred from vents on the north side of the mountain as recently as 700 years ago. Since 1990, increases in earthquake swarms, gas venting and tree kills have led to heightened monitoring by the US Geological Survey. Extensive facilities for fee-based downhill skiing and snowboarding, as well as mountain biking in summer and an interpretive center on the summit, are operated under a lease with the US Forest Service.

     

  • The most prominent geological feature in the area, 11,053-foot Mammoth Mountain is a dormant composite volcano formed by a series of eruptions between 220,000 and 57,000 years ago. Steam-blast eruptions occurred from vents on the north side of the mountain as recently as 700 years ago. Since 1990, increases in earthquake swarms, gas venting and tree kills have led to heightened monitoring by the US Geological Survey. Extensive facilities for fee-based downhill skiing and snowboarding, as well as mountain biking in summer and an interpretive center on the summit, are operated under a lease with the US Forest Service.

     

Avalanche Forecast for 03/27/2017

  • As of 5AM Monday morning, there are between 1 and 3 inches of new snow in the eastern Sierra, primarily north of Mammoth and at elevations above 7,000’. Southwest winds accompanied this fast moving storm and they will shift more to the north tonight (Monday) and Tuesday as temperatures rebound. Wind slabs will be our primary avalanche concern today at middle and upper elevations. As temperatures climb this afternoon and tomorrow, so will the risk of loose wet avalanches on solar slopes at middle Find out More

Reviews

July 15, 2013

“Just did the hike. Very pleasant and comfortable. Took me 2.5 hours because I got lost when I reached Kamikaze Gate. At that junction, there is real need for some direction. The map there only shows the bike trails. Other than that it was great.”

Daniele S., California

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