Wyoming · Rock climbing · Wheatland

Bonnie Lass

The easiest climb at Gneiss Canyon among 17 catalogued routes.

5.8
grade
Sport Bolted
style

Best time to visit Bonnie Lass

Best months: May–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° / 16°

    4 wet

  2. Feb

    38° / 17°

    5 wet

  3. Mar

    47° / 24°

    6 wet

  4. Apr

    54° / 30°

    8 wet

  5. May

    63° / 38°

    11 wet

  6. Jun

    76° / 47°

    8 wet

  7. Jul

    83° / 54°

    7 wet

  8. Aug

    81° / 52°

    7 wet

  9. Sep

    72° / 43°

    6 wet

  10. Oct

    59° / 32°

    6 wet

  11. Nov

    45° / 23°

    5 wet

  12. Dec

    35° / 17°

    4 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Sybille Rsch Unit, WY, 11.9 mi away at 6,086 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

This is the easiest route catalogued at Gneiss Canyon, where climbs range from 5.8 to 5.12b across 17 documented routes.

Photo of the crag

Gneiss Canyon — the crag this route is on
Gneiss Canyon, Wyoming — this photo shows the crag, not this individual route.Photo: Tony Webster, CC BY 2.0 (via Flickr)

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