The curving boundary at the south of this polygon is formed by Warning Tongue Lane and a bridle road. These are both shown on the 1st edition OS map of 1854 suggesting the land division predates these features. The area is divided on the 1st edition map into regular fields. It is probable, given the name 'Black Carr', that the area was improved as part of Vermuydens drainage plan in the 17th century from a wetwood environment. Legibility of the former landscape is fragmentary as the southern boundary can be traced via the bridle path.