Cropmarks of a probable Neolithic long barrow, to the east of Salmonby. Visible as a ditched oval enclosure, measuring 50m by 20m. Identified on aerial photography examined as part of the National Mapping Programme. {1}{2}{3}{4} This long barrow is situated on a false crest, on the neck of a flat-topped spur at the confluence of a tributary stream with the River Lymn. It is aligned north-west to south-east with the long axis running parallel to the contours. It takes the form of an elongated, oval-shaped enclosure, with a straighter northern terminal and more convex southern terminal. Field walking of the site in 1991 revealed no surface traces of the barrow, but did note possible early Neolithic flint cores in the vicinity. Eartlier field walking has also found other prehistoric worked flints and pottery sherds in the surrounding field (see MLI42743). {5}{6} The long barrow appears in aerial photographs as an elongated enclosure orientated north-west to south-east, and defined by an infilled and buried encircling ditch. The ditch is unbroken by a causeway, a form characteristic of the simpler type of Lincolnshire Wolds long barrow which is thought not to have had a mound. The long barrow lies about 70m to the south-east of a bowl barrow (see MLI43719), which is included in the scheduling, along with the intervening ground. {7} Geophysical survey conducted of this site in 2019 prompted an amendment to the scheduling for this monument to be made in April 2024. The scheduling now more accurately covers the remains of the long barrow, along with the adjacent Bronze Age bowl barrow (see MLI43179). Although the barrows cannot be seen on the ground, their infilled and buried ditches are represented as crop marks visible from the air and have been recorded on aerial photographs. From the results of the geophysical survey, the long barrow enclosure appears to be a complete rectangle with rounded terminals, overall 41m long and 16.5m wide. The ditch is an average of 3m wide. Towards the south-east terminal there is a feature, 6m wide which may be either a pit or geological variation. Towards the north-west end of and within the long barrow is a faint curving positive anomaly, which looks to partially mirror the course of the barrow’s enclosure ditch and may indicate the presence of another internal feature. This feature appears to be 11.5m long and at least 7.75m wide. The north-eastern corner of the enclosure is not visible. Several isolated positive anomalies are evident along the south-west length of the long barrow enclosure ditch, which may be pits or the result of variations in the ditch fill. The ditch is unbroken by a causeway, a form characteristic of the simpler type of Lincolnshire Wolds long barrow which is thought to have been unelaborated by a large earthwork mound. No evidence of an internal mound was identified in the geophysical data. Although the long barrow and bowl barrow 680m east-south-east of Manor House have been denuded by ploughing, rare and important archaeological deposits will be preserved in the buried ground surfaces and in the fills of the ditches. These will provide information concerning the dating and construction of the barrows and the sequence of mortuary practices at the site. The same deposits will also retain environmental evidence illustrating the nature of the landscape in which the barrows were set. The area of buried ground surface between the two barrows will retain evidence for ritual, funerary and constructional activities relating to the sites over a considerable length of time and may provide indications of the evolving nature of religious beliefs during this period. It is therefore included in the scheduling. The close association of these barrows demonstrates the continuing ritual significance of the location and has wider implications for the study of demography and settlement patterns from the Neolithic period into the Bronze Age. To the south-west of the long barrow there is a weak positive anomaly, 13m and slightly curved. This has the potential to be a fragment of a ditch feature. Three isolated positive anomalies also intersect with this feature and a fourth sits close by in the location one might expect the linear to continue. These may be pits flanking the ditch. These features are included within the scheduled area. For the full description and the legal address of this scheduled monument please refer to the appropriate entry in the National Heritage List for England. {8}