The Cromlech Boulders have had a damp week with light but frequent precipitation, and today sees only trace amounts; the SW/W-facing rhyolite should be largely surface-dry by late morning but high humidity (77%) and overcast skies limit confidence. A good window exists midday through early evening, but climbers should check holds for residual dampness on arrival.
Based on weather conditions only — does not cover bird nesting restrictions or other access issues.
How accurate is this verdict?
Climbing Outlook
Site Details
The most iconic bouldering venue in North Wales, roadside below Dinas Cromlech in the Llanberis Pass. Rhyolite boulders with problems from V0 to V13 including Jerry's Roof (V8). Extremely easy access but can get very crowded on weekends. The volcanic rock can be slippery when wet.
- Rock Type
- Rhyolite
- Wind Exposure
- Exposed
- Altitude
- 250m
- Climbing
- Bouldering
- Aspects
- SW W
- Problems
- 200
- Boulder Grades
- V0 – V13
- Access
- CRoW Open Access
- Approach
- 1 min
Site Data
- Name
- Cromlech Boulders
- County
- North Wales
- Rock Type
- Rhyolite
- Climbing Types
- Bouldering
- Aspects
- SW, W
- Wind Exposure
- Exposed
- Altitude
- 250m
- Latitude
- 53.0896
- Longitude
- -4.0497
- OS Grid Ref
- —
- Access Type
- CRoW Open Access
- Approach Time
- 1 min
- Problem Count
- 200
- Route Count
- —
- Boulder Grades
- V0 – V13
- Trad Grades
- —
- Tidal
- No
- Parking Notes
- Roadside lay-by on the A4086 in the Llanberis Pass.
- Condition Notes
- —
- ID
- b1e22b55-47f7-4366-ad29-b883395a98e2
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