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.
Lookout Mountain
Avalanche Forecast for 11/15/2024
- AVALANCHE FORECAST: Modest snowfall has begun to build our snowpack. Snow totals have been limited, with accumulations ranging from a dusting to about 13" at favored weather stations in the northern half of the forecast area. While avalanche concerns are minimal at the moment, it's important to remember the old adage: if there is enough snow to ride, there is enough snow to slide. Find out More
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Destination Activities
Public Services
Hours of Operation: N/A
Season: Year Round
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This destination is accessed directly from the Junction of Highway 395 and USFS Route 3S06.
*Note that not all facilities are accessible via public transit.
Related Trails
A Trail - Groomed Snowmobile Trail
13.2 mi
- Surface: Snow
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L Trail - Groomed Snowmobile Trail
5.4 mi
- Surface: Snow
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Related Trails
| Trail | Length (mi) | Surface | Activities and Services |
|---|---|---|---|
| A Trail - Groomed Snowmobile Trail | 13.2 | Snow |
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| L Trail - Groomed Snowmobile Trail | 5.4 | Snow |
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Related Experiences
Dog Sledding the Lookout Mountain Loop
7.4 mi
- Rating: ,
- Surface: Snow,
- Duration: Half day
Four-Wheel Driving the Lookout Mountain Loop
21.4 mi
- Rating: ,
- Surface: Sand,
- Duration: Less than 4 hours
Motorized Trail Riding Lookout Mountain Loop
11.6 mi
- Rating: ,
- Surface: Soil,
- Duration: Less than 4 hours
Snowmobiling the A Trail and L Trail from Sawmill Cutoff Road to Lookout Mountain
11.0 mi
- Rating: ,
- Surface: Snow,
- Duration: Half day
Related Experiences
| Experience | Rating | Length (mi) | Surface | Duration |
|---|---|---|---|---|
| Dog Sledding the Lookout Mountain Loop | 7.4 | Snow | Half day | |
| Four-Wheel Driving the Lookout Mountain Loop | 21.4 | Sand | Less than 4 hours | |
| Motorized Trail Riding Lookout Mountain Loop | 11.6 | Soil | Less than 4 hours | |
| Snowmobiling the A Trail and L Trail from Sawmill Cutoff Road to Lookout Mountain | 11.0 | Snow | Half day |
