Idaho · Rock climbing · American Falls

Massacre Rocks

Near American Falls

18 routes
5.10a – 5.12d
Sport · Bouldering

Best time to visit Massacre 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, 0.9 mi away at 4,195 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Massacre Rocks is a climbing area in Idaho managed by the State Department of Land, sitting about a mile from the Game Show Wall and Love Connection climbing areas. It is a compact cluster of sport and boulder routes, with 18 routes in total, and it works well as a base for a day of climbing with several other climbing areas within a short walk. The most comfortable months for a visit are typically June and September, when typical averages from a nearby weather station run from highs around 78°F to 77°F and lows in the mid-40s. July and August are hotter, with typical highs in the upper 80s, while winter brings typical highs in the mid-30s and lows near 17°F. Sport routes make up the bulk of the climbing here, with grades ranging from 5.10a to 5.12d. The bouldering is a little easier, with V0 to V2. Some of the named routes include The Picnic (5.10a), Burning Love (5.11d) and Zen (5.12d). The River Trail and Pohogwe Trail are both within about a mile and a half, and Rock Creek offers canoeing about 2.4 miles away. Pipeline Campground is roughly 7 miles off for an overnight stay.

Routes (18)