Ohio · Bouldering · Mad River Township

The Dirty Dozen

One of six climbs catalogued at Dirty Little Boulder, this route sits in the middle of the crag's V0-1 to V4 range. First ascent by Shane Bonness.

Also worth it near here
- Cj Brown Dam and Reservoir - Dam SiteCamping · ~11 min drive
- Inman TrailHiking · ~14 min drivePhoto: loganrickert, CC BY 2.0 (via Flickr)
- Little Miami RiverCanoeing · ~17 min drivePhoto: Moofpocket, CC BY 2.5 (via Wikimedia Commons)
Best time to visit The Dirty Dozen
Best months: July–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
  36° / 19°
  12 wet
2. Feb
  40° / 20°
  9 wet
3. Mar
  50° / 28°
  11 wet
4. Apr
  63° / 38°
  13 wet
5. May
  73° / 49°
  14 wet
6. Jun
  81° / 59°
  13 wet
7. Jul
  84° / 62°
  11 wet
8. Aug
  83° / 60°
  9 wet
9. Sep
  78° / 52°
  9 wet
10. Oct
  65° / 41°
  10 wet
11. Nov
  52° / 31°
  10 wet
12. Dec
  41° / 24°
  11 wet
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Springfield Wtp, OH, 4.9 mi away at 951 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Photo of the crag

Best time to visit The Dirty Dozen