Idaho · Rock climbing · Twin Falls

Hidden Cliff

Hidden Cliff in Idaho has 6 sport climbing routes across 6 difficulty grades.

6 routes
5.9- – 5.10c
Sport

Best time to visit Hidden Cliff

Best months: March–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° / 22°

    8 wet

  2. Feb

    46° / 25°

    7 wet

  3. Mar

    56° / 32°

    7 wet

  4. Apr

    63° / 36°

    8 wet

  5. May

    73° / 45°

    8 wet

  6. Jun

    81° / 52°

    5 wet

  7. Jul

    92° / 58°

    2 wet

  8. Aug

    91° / 56°

    3 wet

  9. Sep

    80° / 47°

    3 wet

  10. Oct

    67° / 37°

    5 wet

  11. Nov

    51° / 28°

    7 wet

  12. Dec

    40° / 23°

    9 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Twin Falls-Kmvt, ID, 3.8 mi away at 3,670 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Hidden Cliff is a climbing area in southern Idaho, about 4 miles from the town of McMillan. It sits among a cluster of climbing spots, with Dierkes Lake, Skunk Cave and North Shore all about 0.1 mile away. The area is compact, and its routes are close enough to one another that a trip here can link several of them in one outing. The climbing here is all sport, and the grades run from 5.9- up to 5.10c. The easiest route is Dude at 5.9-, while Knuckle Buster is the hardest at 5.10c. Most of the routes were first ascended by Mark and Tracy Weber, with Boys, Like Jen by Amos Galpin and Knuckle Buster by Michael May. Weather is a factor to consider. Typical averages from a nearby weather station in Twin Falls show July and August highs around 91 to 92°F, while May and September are more comfortable, with highs in the low 80s. Winter is cold, with January highs around 40°F and lows near 22°F. The closest trails for a change of pace are the Canyon Rim Trail, about a mile away, and the Mogensen Trail at roughly 4 miles.

Routes (6)

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