Lookout Mountain

  • Formed by a series of volcanic eruptions nearly 700,000 years ago, Lookout Mountain is a dominant feature to the north of Mammoth Lakes and east of Hwy. 395. Accessible by graded gravel road in summer and by snowmobile in winter, the summit features a mile-wide crater and provides an excellent 360-degree vantage from which to see the eastern scarp of the Sierra and the various features of the Long Valley Caldera. Historically the dome was an important source of pure obsidian to make spear and arrow points.

  • Formed by a series of volcanic eruptions nearly 700,000 years ago, Lookout Mountain is a dominant feature to the north of Mammoth Lakes and east of Hwy. 395. Accessible by graded gravel road in summer and by snowmobile in winter, the summit features a mile-wide crater and provides an excellent 360-degree vantage from which to see the eastern scarp of the Sierra and the various features of the Long Valley Caldera. Historically the dome was an important source of pure obsidian to make spear and arrow points.

Avalanche Forecast for 04/02/2020

  • AVALANCHE UPDATE: ESAC is supporting the requests of local authorities to avoid the risks inherent with backcountry travel during this COVID Pandemic. The potential strain that an injury would place on our rescue and healthcare resources is too great. For the health and safety of ourselves and our community, ESAC has ended its forecasting operations for the season. Find out More

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Related Trails

Related Trails

Trail Length (mi) Surface Activities and Services
A Trail - Groomed Snowmobile Trail 13.9 Snow Cross Country Skiing Snowmobiling Snowshoeing
L Trail - Groomed Snowmobile Trail 5.4 Snow Cross Country Skiing Snowmobiling Snowshoeing

Related Experiences

Related Experiences

Experience Rating Length (mi) Surface Duration
Dog Sledding the Lookout Mountain Loop 7.4 Snow Half day
Motorized Trail Riding Lookout Mountain Loop 11.6 Soil Less than 4 hours
How to get involved Local recreation resources Experiences and ratings Finding your way around the MLTS Trail System Projects