About Carreg Alltrem(OS):
| There is no fast way here from Llanberis, so it remains one of the most beautiful spots in Snowdonia. There are about 20 routes up to 150 feet long, worth splitting into two pitches, as the belay trees are well back from the top of the cliff. The routes tend to run from SEVERE to HVS, with excellent rock and sensibly sized holds. |
| Nearest town or city: | Betws Y Coed |
| Directions: | OS115--GR740/507 Six miles southwest of Betws Y Coed. Take the A470 Blaenau Ffestiniog road and at Dolwyddelan turn left down the small road and over the railway. Turn right and go up the valley through lots of gates. The crag will be about half a mile up the valley on the left side. |
| Latitude, Longitude: | 53.03916, -3.88099 |
| Access Issues: | |
| Camping: | |
| When to Climb: | |
| Quantity of Climbs: | Month |
