From UMHC Hiking Guide
The Glyders are a mountain group in Snowdonia. They are named after the highest peaks in the range, Glyder Fawr and Glyder Fach.
The Glyders stretch from Mynydd Llandegai to Capel Curig, and include five of Wales's fourteen or fifteen summits over 3000 feet; these include Tryfan, considered one of the finest mountains in Wales and the only mountain on the British mainland requiring scrambling to reach the summit. The eastern half of the range in particular, including Glyder Fawr, Glyder Fach and Tryfan, is very popular with walkers and climbers.
Dinorwig Power Station, a hydroelectric pump-storage system, is built in a man-made cavern within Elidir Fawr. The slopes of the Glyders also include the lake Llyn Idwal, and a number of classic climbing areas such as the Idwal Slabs.
