Rhode Island · Rock climbing · Hope Valley · Near Danielson

Clamshell Boulder

5 routes
V1-2 – V6+
Bouldering
Apr–Oct
best months

Clamshell Boulder is a bouldering area in Rhode Island, about 1.2 miles from the town of Rockville. It sits among a cluster of climbing spots, with Grain Boulder, The just 0.1 mile away and Stubtown Rd. Boulders about 0.3 mile off. For comfortable weather, late spring through early fall works best. Typical averages from a nearby weather station in Westerly show June highs around 75°F and September highs around 74°F, with July the warmest month at about 82°F. The Long and Ell Pond Trail is about 1.1 miles away, and the Narragansett Trail (Ri) is about 1.3 miles off. For fishing, the Wood River is about 4.1 miles away.

Around this trail

Add any of these when you start a trip
  • Sleep close

    Scott

    Campground

    Campground · 1.2 mi from the trail
  • Eat after

    Jesse H. Metcalf Mess Hall

    Restaurant

    On your way back · 2 mi

Places © OpenStreetMap contributors · Photos: Elliot Schwartz for StudioEIS, CC BY-SA 3.0 (commons)

More in Danielson
  • Best time to go · Apr–Oct

    Best time to visit Clamshell Boulder

    Best months: April–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

      40° / 25°

      10 wet

    2. Feb

      41° / 26°

      9 wet

    3. Mar

      47° / 32°

      10 wet

    4. Apr

      57° / 41°

      11 wet

    5. May

      67° / 50°

      12 wet

    6. Jun

      75° / 59°

      11 wet

    7. Jul

      82° / 66°

      10 wet

    8. Aug

      80° / 64°

      10 wet

    9. Sep

      74° / 57°

      10 wet

    10. Oct

      64° / 47°

      11 wet

    11. Nov

      54° / 38°

      10 wet

    12. Dec

      45° / 30°

      11 wet

    Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Westerly State Ap, RI, 10.7 mi away at 81 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Routes (5)