Wisconsin · Rock climbing · Necedah

Anthrax Wall

9 routes
5.7 – 5.11c
Trad · Sport · Top Rope
May–Oct
best months

Anthrax Wall is a climbing area in Wisconsin, about 2.4 miles from the town of Strongs Prairie. It sits among a cluster of named climbing spots, including Above Anthrax, Hell Wall (aka Quarry Wall) and Necedah (Petenwell Rock), all within a tenth of a mile. That makes it a natural anchor for a day of rock climbing in this part of the state. The area offers a mix of trad and sport routes, with the hardest climbing reaching 5.11c. Among the nine routes listed, trad is the dominant style, and the grades typically fall between 5.7 and 5.11c. Notable routes include Fistful of Metal at 5.8 and Anita at 5.11c, both with climbers named on their first ascents. The sport route Anthrax is also listed. Summer is the warmest stretch for a visit. Typical averages from the nearby Necedah weather station show July highs around 84°F with lows near 58°F, while winter highs stay in the 20s. That station sits a few hundred feet lower than the wall, so temperatures on the rock may run slightly cooler.

  • Best time to go · May–Oct

    Best time to visit Anthrax Wall

    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

      26° / 6°

      7 wet

    2. Feb

      32° / 9°

      7 wet

    3. Mar

      44° / 20°

      8 wet

    4. Apr

      59° / 31°

      10 wet

    5. May

      71° / 44°

      11 wet

    6. Jun

      80° / 53°

      11 wet

    7. Jul

      84° / 58°

      10 wet

    8. Aug

      81° / 56°

      9 wet

    9. Sep

      74° / 48°

      9 wet

    10. Oct

      60° / 36°

      9 wet

    11. Nov

      44° / 24°

      8 wet

    12. Dec

      31° / 12°

      8 wet

    Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Necedah, WI, 3.4 mi away at 922 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Routes (9)