Idaho · Rock climbing · American Falls

Aztec

Aztec in Idaho has 5 bouldering routes spanning 3 difficulty grades.

5 routes
V1 – V4
Bouldering

Best time to visit Aztec

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, 1.1 mi away at 4,195 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Aztec is a bouldering area within Massacre Rocks State Park in Idaho, managed by State Park and Recreation. It sits among several other climbing areas and trails, including Hindu, Nordic Boulder and Ancient Cluster, all about 0.1 mile away, and the River Trail, which starts just as close. The climbing here is all bouldering, with five routes ranging from V1 to V4. The easiest is Spicy Hot Coco at V1, and El Dorado and Xibalba are both V4. The area is best suited to climbers who enjoy bouldering on a small scale, with no single route standing out as a long climb. For timing, late spring and early fall are the most comfortable. Typical averages from a nearby weather station show May highs around 68°F and September highs around 77°F, while July and August average in the upper 80s. Pipeline Campground, about 6 miles away, is the closest place to camp. Rock Creek, a canoeing spot, lies about 2.3 miles off.

Routes (5)