Chestnuts Long Barrow is located around 100 metres north-west of Addington long barrow. The mound itself no longer exists, although the eastern end of the barrow is still marked out by sarsens, some of which have been re-erected to their original positions. Although the earthen mound no longer exists in any form, it has been estimated that it would have been 20 metres long and around 15 metres wide. The chamber would have been 12 ft long, 7 ft wide, and 9 ft high, thus being described by Paul Ashbee as being of "huge and unusual proportions". Inside the chamber had been deposited human bone, cremated bone, flint artefacts, and ceramic sherds.