California · Rock climbing · Soda Springs

Unknown Boulder

6 bouldering routes in California, 5 difficulty grades.

6 routes
V1-2 – V4
Bouldering

Is Unknown Boulder open right now?

Alert in the area

The Forest Service lists 2 alerts for Tahoe National Forest.

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

Best time to visit Unknown Boulder

Best months: June–August. 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

    40° / 15°

  2. Feb

    41° / 15°

  3. Mar

    48° / 19°

  4. Apr

    53° / 22°

  5. May

    62° / 28°

  6. Jun

    72° / 32°

  7. Jul

    80° / 37°

  8. Aug

    79° / 35°

  9. Sep

    73° / 31°

  10. Oct

    61° / 24°

  11. Nov

    49° / 20°

  12. Dec

    39° / 14°

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Sagehen Creek, CA, 7.2 mi away at 6,337 ft. The station sits about 1,100 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.

Unknown Boulder is a climbing area in the Truckee Ranger District of Tahoe National Forest in California, managed by the Forest Service. It sits among a cluster of bouldering spots, with Summit Lake Boulders about 0.2 miles away and Trailside Boulders about 0.6 miles off. Summer is the most comfortable time to visit. Typical averages from the Sagehen Creek weather station, about 7 miles away, show July highs near 80°F with lows around 37°F, and the station sits roughly 1,100 feet lower than the boulders, so temperatures at the climbing area run cooler. The Pacific Crest National Scenic Trail #2000 passes about 0.9 miles away, and the Warren Lake hike is about half a mile off. For an overnight stay, White Rock campground is about 6 miles away.

Routes (6)

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