Images of the Harold Stone between 2000 and 2011.

The Harold Stone is an erect monolith, 1.7m high by 0.8m by 0.5m. It tapers from a broad base to a point, with its edges aligned nearly north-south; its wide face is orientated to face the sea to the east and the island to the west. It is one of several stones in south-west Wales bearing the same name.
Although the Harold Stone on Skomer is currently undated, excavations at other similar stones in Pembrokeshire have always yielded a prehistoric, or Bronze Age, date.