NHER 66304 (Monument) - Potentially prehistoric, medieval and undated remains

May 2018. Desk-based Assessment.
Environmental Impact Assessment of the potential impacts of the proposed Hornsea Project Three offshore wind farm on the historic environment. This study incorporated the results of an initial walkover survey and the first phases of geophysical survey.
See relevant chapter of Environmental Statement and associated appendices for further detail (S1).
P. Watkins (HES), 15 April 2025.

November 2021-March 2022. Geophysical Survey.
Magnetometer survey of site on proposed route of Hornsea Project Three offshore wind farm onshore cable (Area 3902).
This survey identified nothing of potential archaeological interest.
Scattered discrete dipolar anomalies and various other areas of magnetic disturbance were probable caused by ferrous material on or near the surface (most likely modern debris).
Other amorphous anomalies are of probable natural origin.
Information from draft report. Final version awaited.
P. Watkins (HES), 15 April 2025.

February-June 2022. Trial Trenching.
Evaluation of site on proposed route of Hornsea Project Three offshore wind farm onshore cable (P2TT47; Trenches 524-531 and 1315).
The nine trenches excavated at this location revealed a number of pits and ditches, the majority of which were encountered within a single trench at the southern end of the site.
A range of prehistoric finds were recovered, including Mesolithic/Neolithic worked flints and small assemblages of Late Neolithic/Early Bronze Age and Early Iron Age pottery sherds. Much of this material was residual within later features, the possible exceptions including a Late Neolithic/Early Bronze Age pottery sherd recovered from an otherwise undated small pit. Five north-west to south-east aligned ditches were found to contain Early Iron Age pottery but four of these also produced later finds, including a single Roman pottery sherd and small amounts of medieval pottery. A handmade sherd of possible Early/Middle Saxon date was also found in one of these ditches.
Undated remains included a north-to-south aligned ditch at the northern end of the site.
Information from draft report. Final version awaited.
P. Watkins (HES), 15 April 2025.