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 04/01/2020

  • AVALANCHE FORECAST: MODERATE avalanche danger exists at all elevations. With another day of sunny skies and very warm temperatures expected, sizable Loose Wet avalanches will be possible at all elevations particularly on solar aspects. Wind slabs may also be possible near and above treeline. Heightened avalanche conditions exist, and human triggered avalanches remain possible. Evaluate snow and terrain carefully. 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