California · Rock climbing · Pearblossom

Mushroom Boulder

Mushroom Boulder in California has 8 sport climbing routes across 7 difficulty grades.

Mushroom BoulderPhoto: RuggyBearLA, CC BY 2.0 (via Flickr)
8 routes
5.8 – 5.13c
Sport

Is Mushroom Boulder open right now?

Alert in the area

The Forest Service lists 7 alerts for Angeles National Forest.

As of · Source: USFS · Angeles National Forest. Agencies don't list every closure — check before you go.

Best time to visit Mushroom Boulder

Best months: April–October. 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.

  1. Jan

    48° / 26°

    5 wet

  2. Feb

    48° / 25°

    8 wet

  3. Mar

    54° / 29°

    6 wet

  4. Apr

    60° / 32°

    4 wet

  5. May

    69° / 39°

    2 wet

  6. Jun

    78° / 44°

    1 wet

  7. Jul

    83° / 53°

    2 wet

  8. Aug

    82° / 51°

    2 wet

  9. Sep

    75° / 46°

    2 wet

  10. Oct

    64° / 37°

    3 wet

  11. Nov

    55° / 29°

    4 wet

  12. Dec

    47° / 25°

    5 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Wrightwood, CA, 13.8 mi away at 6,000 ft. The station sits about 700 ft lower than this place, so expect it a little cooler here. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Mushroom Boulder is a sport climbing area in California's Angeles National Forest, within the San Gabriel Mountains National Monument Ranger District. The Forest Service manages the land, and the boulder sits among several other climbing spots that make this corner of the San Gabriel Mountains a compact, clustered destination. The routes here are all sport, and the grade range runs from 5.8 up to 5.13c. The names of the climbs are as colorful as the boulder itself, with routes like Mushroom, Fungus and Vicious Spore. The hardest of them, Vicious Spore, is a 5.13c first ascent by Louie Anderson in 1998. Kill the Spore, a 5.11b/c, is another Anderson route. Ramblin' Wall and Freezer Burn Wall are both about 0.1 mile away, and Eagles Roost Buttress is the same distance. For a break from the crag, the South Fork Trail lies about 1.7 miles off, and the Buckhorn campground is roughly 2.2 miles away.

Routes (8)

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