1. Fragmentary but substantial walling, possibly remnants of a rectangular building, c.14m by 10m, on the narrow isthmus of land between North and South Haven. This may be the remains of a medieval chapel reputed to have stood somewhere on Skomer Island. The position overlooks one of the most likely harbourages for historic visitors.

O Davis, RCAHMW, 09 Jan 2012
T. Driver, RCAHMW, Oct 2014

2. The eroding isthmus together with remains of walls and the footings of the stone building have been monitored as part of the EU-funded CHERISH Project (2014-2021) including through structure-from-motion aerial photography on 18th May 2017.

T. Driver, Feb 2019

Baseline aerial reconnaissance survey for the CHERISH Project. Crown: CHERISH PROJECT 2019. Produced with EU funds through the Ireland Wales Co-operation Programme 2014-2020. All material made freely available through the Open Government Licence.

3. Visited and surveyed for drone photogrammetry by Louise Barker, Julian Whitewright and Toby Driver for the Royal Commission, 3rd April 2025