1. A roughly circular depression c. 25 m across. A field boundary 'kinks' to avoid it so it must pre-date the setting out of the field system at the Wick. Its function is not clear - it could be a platform for a large timber structure, or even a pond.

O Davis, RCAHMW, 10 Jan 2012

2. In 2012 as part of the Skomer Island Project, geophysical survey was undertaken to evaluate the preservation of sub-surface archaeological features within areas of prehistoric relict field systems and settlements,. An area 0.96 hectares in extent was focussed on The Wick around the diameter platform, round barrow (NPRN 415714) and part of the field systems (NPRN 415715).

Twenty four 20m x 20m grid squares were surveyed using a fluxgate gradiometer and twelve 20m x 20m grid squares using a resistance meter. The obvious archaeological features revealed on the survey were relict field boundaries and cultivation ridges with other anomalies of potential archaeological significance. The resistance survey also revealed an oval area 11m x 9m of marginally higher resistance to the surroundings, potentially the remains of a small building located within the platform.

Louise Barker, RCAHMW, Jan 2016

Sources:
Barker, L., Davis, O., Driver, T. and Johnston, R. 2012. Skomer Island and Skokholm Island, Archaeology in Wales 51, 160-163.

Barker, L., Davis, O., Driver, T. and Johnston, R. 2012. Puffins amidst prehistory: reinterpreting the complex landscape of Skomer Island, in: Britnell, W. J. and Silvester, R. J. Reflections on the Past, Essays in Honour of Frances Lynch. Cambrian Archaeological Association. Welshpool. 280-302.

Johnston, B., Barker, L., Davis, O. and Driver, T. 2012. Geophysical Survey on Skomer Island, Pembrokeshire, April 2012. Department of Archaeology, University of Sheffield & Royal Commission on the Ancient and Historical Monuments of Wales. Unpublished Report.

Barker, L., Davis, O., Driver, T. and Johnston, R. 2013. Skomer Island, Marloes & St Brides, Pembrokeshire [geophysics], Archaeology in Wales 52, 158-9.