Skomer is an island off the west coast of Dyfed, the archaeology of which, consisting of fields, small enclosures, cairns, huts and dams, is well preserved. The broad outline and much detail was recorded by W. F. Grimes in 1950 and it was demonstrated that about two-thirds of the island is covered in a more or less undisturbed prehistoric landscape, preservation being due to the absence of Medieval and later settlement. The fieldwork described in the present paper was designed to record in detail small enclosures, or pounds, and habitation sites, mainly at a scale of 1:100 which was not done by Grimes. In addition two sets of air photographs were used to make a map of the fields. The work was done as a student exercise and is accordingly largely descriptive. However, analysis at two spatial levels has been attempted, one for huts and pounds and one for settlement complexes as a whole. But beyond the island itself there has been no comparative survey. The remains could be of any age from the Neolithic to early Roman period.