Colorado · Bouldering · Monument

Unknown Arete

Upper-grade boulder problem in the Unknown Boulder sector at Mount Herman.

V5
grade
Bouldering Pads
style

Is Unknown Arete open right now?

Alert in the area

The Forest Service lists 11 alerts for Pike and San Isabel National Forests.

As of · Source: USFS · Pike and San Isabel National Forests. Agencies don't list every closure — check before you go.

Best time to visit Unknown Arete

Best months: May–June and September. 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

    39° / 13°

    5 wet

  2. Feb

    39° / 14°

    6 wet

  3. Mar

    45° / 20°

    7 wet

  4. Apr

    50° / 26°

    8 wet

  5. May

    59° / 33°

    10 wet

  6. Jun

    70° / 42°

    11 wet

  7. Jul

    74° / 46°

    16 wet

  8. Aug

    72° / 45°

    16 wet

  9. Sep

    66° / 39°

    9 wet

  10. Oct

    56° / 30°

    6 wet

  11. Nov

    46° / 19°

    5 wet

  12. Dec

    39° / 13°

    5 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Ruxton Park, CO, 14.4 mi away at 9,060 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Located in the Unknown Boulder sector at Mount Herman, this climb represents the upper end of the V0+ to V5- range catalogued at the crag, where 24 routes have been established.

Keep exploring — more climbs worth the drive