Earthworks of medieval ridge and furrow, to the east of Covenham St Bartholomew. Identified on aerial photography examined as part of the National Mapping Programme. {1} Further remains of medieval ridge and furrow in this area were noted on aerial photographs dated to 1971, examined as part of the Lincolnshire Coastal Grazing Marsh project. {2} Further traces of ridge and furrow earthworks, extending further south than those previously identified, can be discerned on recent lidar data. Some loss of the previously identified remains has also occurred, due to modern ploughing in some areas. {3}