Ordered by the number of climbs recorded. About quartzite.
| Crag | Location | # Climbs |
|---|---|---|
| Gogarth | United Kingdom / Wales / Holyhead | 63 |
| The Chasms | Isle of Man / Isle of Man | 18 |
| Rhoscolyn | United Kingdom / Wales / Holyhead | 17 |
| Shawangunks | United States / New York / Ulster County | 17 |
| Arisaig Cave | United Kingdom / Scotland / Arisaig | 4 |
| Porth Dafarch | United Kingdom / Wales / Holyhead | 4 |
| The Range | United Kingdom / Wales / Holyhead | 3 |
| Trearddur Bay | United Kingdom / Wales / Holyhead | 3 |
| Moores Wall | United States / North Carolina / Stokes County | 3 |
| Penlas Rock | United Kingdom / Wales / Holyhead | 2 |
| Taskra Gorge | Morocco / Souss-Massa / Province de Chtouka-Aït Baha | 1 |
| Lake Louise | Canada / Alberta / Improvement District No. 9 | 1 |
| Silver Lake | United States / California / Mono County | 1 |
| Portknockie | United Kingdom / Scotland / Moray / Buckie | 1 |
| Beinn Eighe | United Kingdom / Scotland / Highland Council / Achnasheen | 1 |