Although it cannot be identified with certainty this is thought to be a round barrow. Some flints have been reported from the site. {1}{2}{3} The monument includes the earthwork remains of a bowl barrow known as Grim's mound located in a commanding position on the summit of a spur between the river Bain and one of its tributaries. It is a grassy mound some nineteen metres in diameter and 2.6 metres high, situated adjacent to the Viking way which runs between the sites of the medieval villages of Biscathorpe and Calcethorpe. It overlies the eastern perimeter of the monument and it bends slightly at this point, illustrating the impact of the monument in the subsequent development of the landscape. Chance finds of worked flint have been recovered from the plough soil around the monument which itself is largely undisturbed. Although the encircling ditch, from which material for the mound was quarried is not visible, it is thought to survive beneath the present ground surface. Because the monument stands as a substantial, well-preserved and accessible earthwork it will retain valuable archaeological deposits, including human remains, beneath the mound and within the fills of the ditch. These deposits will also contain environmental evidence illustrating the nature of the landscape in which the monument was set. {4}