Idaho · Bouldering · Almo

Global Tetrahedron

The hardest problem at Castle Rocks Bouldering in the Global Tetrahedron sector.

V8
grade
Bouldering Pads
style

Best time to visit Global Tetrahedron

Best months: April–June and September–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

    40° / 21°

    6 wet

  2. Feb

    44° / 24°

    6 wet

  3. Mar

    54° / 30°

    7 wet

  4. Apr

    60° / 34°

    8 wet

  5. May

    69° / 41°

    9 wet

  6. Jun

    78° / 48°

    6 wet

  7. Jul

    86° / 57°

    4 wet

  8. Aug

    86° / 56°

    4 wet

  9. Sep

    77° / 47°

    4 wet

  10. Oct

    64° / 37°

    5 wet

  11. Nov

    49° / 28°

    6 wet

  12. Dec

    39° / 21°

    6 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Oakley, ID, 14 mi away at 4,559 ft. The station sits about 1,400 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.

This is the hardest climb catalogued at Castle Rocks Bouldering, representing the upper limit of the V2–V8 range established across the Global Tetrahedron sector.

Photo of the crag

Castle Rocks Bouldering — the crag this route is on
Castle Rocks Bouldering, Idaho — this photo shows the crag, not this individual route.Photo: Seth Tisue, CC BY-SA 2.0 (via Flickr)

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