Idaho · Bouldering · American Falls

On the Rocks

Upper-difficulty climb in Bar Stool sector at Massacre Rocks State Park.

V6
grade
Bouldering Pads
style

Best time to visit On the Rocks

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

    35° / 17°

    10 wet

  2. Feb

    39° / 21°

    9 wet

  3. Mar

    51° / 27°

    9 wet

  4. Apr

    59° / 33°

    10 wet

  5. May

    68° / 39°

    10 wet

  6. Jun

    78° / 46°

    7 wet

  7. Jul

    89° / 53°

    5 wet

  8. Aug

    88° / 52°

    6 wet

  9. Sep

    77° / 43°

    6 wet

  10. Oct

    62° / 34°

    7 wet

  11. Nov

    47° / 24°

    9 wet

  12. Dec

    35° / 18°

    10 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Massacre Rocks Sp, ID, 0.7 mi away at 4,195 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Located in the Bar Stool sector at Massacre Rocks State Park, this climb represents the upper end of the difficulty spectrum among the 46 routes catalogued at the crag, which span from V0 to V7.