Hiking activities in County Wicklow
You can hike up Camaderry Mountain (700m), hidden behind the hills that flank the northern side of the valley. The walk starts on the road just 50m back towards Glendalough from the entrance to the Upper Lake car park. Head straight up the steep hill to the north and you come out on open mountains with sweeping views in all directions.
You can then continue up Camaderry to the northwest or just follow the ridge west looking over the Upper Lake. To the top of Camaderry and back is about 7.5km and takes about four hours.
You can walk up the Spink (from the Irish for 'pointed hill'; 380m), the steep ridge with vertical cliffs running along the southern flanks of the Upper Lake. You can go part of the way and turn back, or complete a circuit of the Upper Lake by following the top of the cliff, eventually coming down by the mine workings and going back along the northern shore. The circuit is about 6km long and takes about three hours.