The easiest and most popular walk in the Glendalough Valley is the gentle hike along the northern shore of the Upper Lake to the lead and zinc mine workings, which date from 1800. The better route is along the lake shore rather than on the road (which runs 30m in from the shore), a distance of about 2.5km (one way) from the Glendalough Visitor Centre. Continue up to the head of the valley if you wish.