The mountains are very popular for hill-walking, with eighteen Munros lying between Ben Avon in the east and Glen Feshie in the west. In winter these summits can often be reached by ski touring. The Cairngorms have excellent climbing, and has long attracted winter climbers, especially in the northern corries. This area boasts what was for a time probably the world's hardest traditionally protected mixed climb: "The Hurting", grade XI. As with all land in Scotland, there is a right of responsible access to the mountains for those wishing to participate in recreational pursuits, although the restriction on access via the funicular means walkers and climbers cannot use the railway to access the hills.