California · Bouldering · Palmdale

South Seam

Entry-level problem in the Hillyer Summit Trail Boulder sector at Horse Flats.

V0
grade
Bouldering Pads
style

Is South Seam 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 South Seam

Best months: Year-round. 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

    56° / 38°

    7 wet

  2. Feb

    55° / 37°

    8 wet

  3. Mar

    59° / 39°

    7 wet

  4. Apr

    63° / 42°

    4 wet

  5. May

    70° / 48°

    3 wet

  6. Jun

    79° / 58°

    1 wet

  7. Jul

    84° / 64°

    1 wet

  8. Aug

    85° / 64°

    1 wet

  9. Sep

    81° / 59°

    1 wet

  10. Oct

    72° / 51°

    3 wet

  11. Nov

    63° / 43°

    4 wet

  12. Dec

    55° / 37°

    7 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Mt Wilson Cbs, CA, 8.7 mi away at 5,710 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

One of eight bouldering problems catalogued at Horse Flats, this climb sits at the entry level of the Hillyer Summit Trail Boulder sector, which spans from V0 to V7.

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