The Harold Stone, Skomer Island, c.1940s.

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.
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. It is therefore safe to assume that this stone is also a Bronze Age monument, marking a burial (in a cremation urn) or an area of now concealed ritual and funerary activity.

This comes from a collection of 40 images, found in the archive of the island's library, is accredited to Norman Wylie Moore, about whom nothing is known. The images date from the late 1940s, possibly documenting the West Wales Field Society's visit in 1947, or relating to the Wildlife Conservation Special Committee (chaired by Dr. Julian Huxley) which helped to recognise Skomer as a potential nature reserve in the same year.