New York · Rock climbing · Johnsburg · Near Schroon Lake

Main Slab

6 routes
5.3 – 5.8+
Trad · Mixed

Main Slab is a climbing area in the Wilcox Lake Wild Forest in New York, managed by the State Department of Conservation. It sits within a cluster of climbing spots, with Waterfall Wall just 0.1 mile away and Slanting Cracks Wall and Black Arches Wall each about 0.2 mile off. The routes here range from 5.3 to 5.8+ on the YDS scale, with a mix of traditional and mixed styles, and the grade distribution makes it a solid choice for climbers who can handle a 5.6 route. The most comfortable climbing weather typically comes in July and August, when typical averages from the Indian Lake weather station run in the mid-70s for highs and in the mid-50s for lows. That station sits about 22 miles away, so temperatures at the slab may differ. Winter is cold, with January highs averaging around 25°F. Several other climbing areas are close by, including Waterfall Wall and Slanting Cracks Wall. Crane Mountain Path is about 1.1 mile away for a hike after a day on the rock.

Around this trail

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    Dippikill

    Campground

    Campground · 4.0 mi from the trail

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More in Schroon Lake
  • Best time to go

    Best time to visit Main Slab

    No month here meets our mild-weather rule. 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

      25° / 6°

      17 wet

    2. Feb

      28° / 7°

      14 wet

    3. Mar

      36° / 15°

      14 wet

    4. Apr

      49° / 28°

      14 wet

    5. May

      63° / 40°

      16 wet

    6. Jun

      71° / 49°

      15 wet

    7. Jul

      75° / 54°

      15 wet

    8. Aug

      73° / 53°

      13 wet

    9. Sep

      67° / 45°

      13 wet

    10. Oct

      54° / 35°

      16 wet

    11. Nov

      41° / 25°

      16 wet

    12. Dec

      31° / 14°

      17 wet

    Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Indian Lake 2sw, NY, 21.9 mi away at 1,670 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Routes (6)

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Sky High WallPhoto: andyarthur, CC BY 2.0 (via Flickr)

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Crane Mountain

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Over The Measles WallPhoto: andyarthur, CC BY 2.0 (via Flickr)

Over The Measles Wall

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Upper Measles WallPhoto: andyarthur, CC BY 2.0 (via Flickr)

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Measles WallsPhoto: andyarthur, CC BY 2.0 (via Flickr)

Measles Walls

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