Wansunt Pit is a 1.9-hectare (4.7-acre) geological Site of Special Scientific Interest in Dartford Heath between Crayford in the London Borough of Bexley and Dartford in Kent.

It is important geologically because it exposes the Dartford Heath Gravel, and the relationship of this exposure to the Swanscombe sequence and the Thames Terraces is a controversial issue in Thames Pleistocene studies.

[1][2] The site is part of Braeburn Park,[3] a nature reserve managed by the London Wildlife Trust.

Excavations going back over a hundred years have revealed stone tools of Homo Heidelbergensis, dating from Marine Isotopic Stage 11, equivalent to the geological Hoxnian Stage, an interglacial period between 424,000 and 374,000 years ago.

The first is crossed by Galloway Drive and the second, which is inaccessible, is north west of Denton Road.