Slab Boulder
Slab Boulder in California has 10 bouldering routes on slab rock.
- 10 routes
- V0 – V2+
- Bouldering
Is Slab Boulder open right now?
Alert in the area
The Forest Service lists 4 alerts for Inyo National Forest.
Stage 1 Fire Restrictions in Effect
Agency alert covering Inyo National Forest · Order 05-04-50-26-23 · USFS · Inyo National Forest
Help Halt Golden Mussel Invasion
Agency alert covering Inyo National Forest · USFS · Inyo National Forest
Ansel Adams and John Muir Wilderness Campfire Restrictions
Agency alert covering Inyo National Forest · Order 05-04-50-25-04 · USFS · Inyo National Forest
Golden Trout and Hoover Wilderness Campfire Restrictions
Agency alert covering Inyo National Forest · Order 05-04-50-25-05 · USFS · Inyo National Forest
As of · Source: USFS · Inyo National Forest. Agencies don't list every closure — check before you go.
Best time to visit Slab Boulder
Best months: May–September. Best months have typical highs of 55–85 °F, lows of 30 °F or warmer (32 °F where the station doesn't record snow), at most one snowy day and no more than 12 wet days.
Jan
41° / 17°
Feb
41° / 18°
Mar
45° / 22°
Apr
51° / 27°
May
60° / 35°
Jun
70° / 42°
Jul
78° / 49°
Aug
77° / 47°
Sep
71° / 40°
Oct
61° / 30°
Nov
49° / 23°
Dec
41° / 17°
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Mammoth Lakes Rs, CA, 12.4 mi away at 7,804 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
Slab Boulder is a bouldering area in the Mono Lake Ranger District of Inyo National Forest in California, managed by the Forest Service. It sits among a cluster of other bouldering spots, and the surrounding area offers camping and hiking within a few miles. The bouldering here is all in the boulder style, with 12 problems ranging from V0- to V2+. Most of them sit around V1, and the hardest is Problem E' at V2+. Several of the named problems, including Problem B and Problem I, give a sense of the area's grade range. Summer is the most comfortable time to visit. Typical averages from a nearby weather station at Mammoth Lakes show July highs around 78°F and lows near 49°F, while winter highs hover around 41°F with lows in the teens. Ice Cream Boulders and Power Boulder are each about 0.1 mile away, and Boulder with a View is just as close. For an overnight base, Oh Ridge campground is about 0.3 mile off.
Keep exploring — more climbs worth the drive
Photo: GSEC, CC BY 2.0 (via Flickr)The Landing Strip
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Boulder with a View
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June Lake Slabs
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9-Chouinard
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7-Hill
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5-Brower
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Rush
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Grimsel (north)
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