Earthworks of medieval ridge and furrow, to the north-east of Grainsby Grange. Identified on aerial photography examined as part of the National Mapping Programme. {1} The earthworks could be discerned on the Google Maps aerial imagery layer, along with further remains not identified by the NMP, lying to the south-east of Grainsby Grange. These additional earthworks lay on the same alignment as those to north-east. {2}