Kevin of Glendalough

https://www.youtube.com/watch?v=BwluBzDNEN8

Glendalough, or the Glen of two Lakes, is one of the most important sites of monastic ruins in Ireland. Before the arrival of St. Kevin this glen would have been desolate and remote, and would have been ideal for a secluded retreat. 
St. Kevin’s Bed can best be described as a man made cave cut in the rock face very close to the edge of the mountain. It overlooks the upper lake from a height of about 30 odd feet (10 metres). The approach to the cave is very difficult, with access to it is through a rectangular space and a short passageway 3 ft. (1 metre) high and 2½ ft. wide. The inner or main part of the cave is just 4 ft. wide (1.5 metres) and less than 3 ft.(1 metre) high. It is reasonable to assume that the cave could only have been used as a sleeping place, and would have been impossible for an adult to stand upright in it, so it is quite likely that St Kevin only used it as his bed, or a place for pious prayer or meditation.