Lough Nahanagan - Camaderry Mountain (699m)

Camaderry is a useful summit for starting or ending a walk around either the Glendalough or Glendasan Valley.

Lough Nahanagan is a corrie lake and is found at the head of Glendasan Valley, on the north face of Camaderry Mountain.

The lake is the least natural condition of the corries in the mountains because of a electricity substation on its shore. This forms part of the Turlough Hill hydroelectric scheme. Two and a half million tonnes of rock were removed from the summit of Turlough Hill above Lough Nahanagan to create a reservoir. At peak demand times for electricity, water is released from the upper reservoir to flow down through electricity generating turbines and on into Lough Nahanagan. At night when the demand for electricity is low, the water is pumped back up to the upper reservoir.