Ordered by the number of climbs recorded. About rhyolite.
| Crag | Location | # Climbs |
|---|---|---|
| Clogwyn Du'r Arddu | United Kingdom / Wales / Caernarfon | 45 |
| The Bowderstone | United Kingdom / England / Cumbria / Keswick | 34 |
| Dinas Cromlech | United Kingdom / Wales / Gwynedd / Caernarfon | 22 |
| Dinas Mot | United Kingdom / Wales / Gwynedd / Caernarfon | 15 |
| Idwal Slabs | United Kingdom / Wales / Bangor | 14 |
| Creag a' Bhancair | United Kingdom / Scotland / Ballachulish | 12 |
| Scafell East Buttress | United Kingdom / England / Cumberland / Seascale | 12 |
| Dove Crag | United Kingdom / England / Cumbria / Penrith | 11 |
| Pavey Ark | United Kingdom / England / Westmorland and Furness / Ambleside | 10 |
| Scafell Crag | United Kingdom / England / Cumberland / Seascale | 10 |
| Clogwyn y Grochan | United Kingdom / Wales / Caernarfon | 9 |
| Pillar | United Kingdom / England / Cumberland / Cleator | 8 |
| Cromlech Boulders | United Kingdom / Wales / Gwynedd / Caernarfon | 8 |
| Kentmere Boulders | United Kingdom / England / Cumbria / Kendal | 8 |
| Coniston Boulders | United Kingdom / England / Westmorland and Furness / Coniston | 8 |
| Gravestones | United Kingdom / Wales / Caernarfon | 7 |
| Cyrn Las | United Kingdom / Wales / Caernarfon | 6 |
| The Napes | United Kingdom / England / Cumberland / Seascale | 6 |
| Gimmer Crag | United Kingdom / England / Westmorland and Furness / Ambleside | 5 |
| Esgair Maen Gwyn | United Kingdom / Wales / Caernarfon | 5 |