Just east of Teampall na Skellig and 10m above the lake waters is the 2m-deep artificial cave called St Kevin's Bed, said to be where Kevin lived. The earliest human habitation of the cave was long before St Kevin's era - there's evidence that people lived in the valley for thousands of years before the monks arrived. In the green area just south of the car park is a large circular wall thought to be the remains of an early Christian caher (stone fort).