Remains of a possible Neolithic long barrow, visible as faint cropmarks on an aerial photograph taken in 1991, of this area to the north-west of South Ormsby. The cropmarks show an elongated oblong-shaped enclosure, defined by a ditch measuring roughly 18m by 49m, and aligned along an east-north-east to west-wouth-west axis. Faint traces of two further nearby long barrows also appear as cropmarks to the north-east (see MLI43651) and east (see MLI126960), along with a probable Bronze Age round barrow slightly further to the south-east (see MLI82256). {1} The group of three long barrows and the nearby round barrow were all scheduled in April 2024, together with an adjacent C-shaped enclosure of likely prehistoric date (see MLI128005). The survival of all these monuments as buried features had been confirmed by geophysical survey, conducted in 2018, along with the clearly defined cropmarks noted on aerial photography. All of the features here lie below the crest of the hill south of Bluestone Heath Road, and north of the valley of a small brook which eventually joins Calceby Beck. This long barrow is as described above, with the geophysical survey comfirming the complete circuit of the enclosing ditch, which measures around 2m wide. The internal measurements of the barrow are 47.8m in length by 12.93m, with no apparent widening at either end. Valuable archaeological deposits will be preserved on the buried ground surface and in the fills of the ditches. These will provide rare information concerning the dating and construction of the monument 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 monuments were set. The three long barrows, one round barrow and C-shaped ditched enclosure form a group. They are all situated within 90m of each other and demonstrate that there was considerable activity in this location in the Neolithic and Bronze Age period. They also form part of the wider significant group of long barrows in the Lincolnshire Wolds. {2}