Ordered by the number of climbs recorded. About rhyolite.
| Crag | Location | # Climbs |
|---|---|---|
| Flat Crags | United Kingdom / England / Westmorland and Furness / Ambleside | 3 |
| Castle Rock of Triermain | United Kingdom / England / Keswick | 3 |
| Craig Ddu | United Kingdom / Wales / Caernarfon | 3 |
| Goat Crag | United Kingdom / England / Keswick | 3 |
| Castell Cidwm | United Kingdom / Wales / Caernarfon | 3 |
| Mynydd Dinas | United Kingdom / Wales / Newport | 3 |
| Bowderstone Crags | United Kingdom / England / Keswick | 3 |
| Frog Buttress | Australia / Queensland / Scenic Rim Regional | 3 |
| Llech Ddu | United Kingdom / Wales / Bangor | 3 |
| Caseg Boulder | United Kingdom / Wales / Bangor | 3 |
| Clogwyn y Tarw | United Kingdom / Wales / Bangor | 3 |
| Glyder Fach | United Kingdom / Wales / Bangor | 3 |
| Gillercombe | United Kingdom / England / Keswick | 3 |
| Milestone Buttress Boulders | United Kingdom / Wales / Bangor | 3 |
| Craig Nant y Fedw | United Kingdom / Wales / Penrhyndeudraeth | 3 |
| Langdale Boulders | United Kingdom / England / Westmorland and Furness / Ambleside | 2 |
| Piers Gill Crag | United Kingdom / England / Cumberland / Seascale | 2 |
| Wasdale Screes | United Kingdom / England / Cumberland / Seascale | 2 |
| Cwm Cneifion | United Kingdom / Wales / Bangor | 2 |
| Peakstone Inn Amphitheatre | United Kingdom / England / Stoke-on-Trent | 2 |