[1] Members of the public can dig for fossils in a small area designated as the Fossil Bed with the permission of the Lesnes Abbey ranger.

The site is late Palaeocene[2] and early Eocene[3] 50 to 60 million years ago.

Important Palaeocene finds in the Blackheath Beds on the site include 22 species of mammals in 12 orders, which resemble the Wasatchian fauna of North America.

It has also yielded one of only two Palaeocene birds found in Britain, the holotype of Marinavis longirostris, a large Procellariiform sea bird, and the site may throw light on Procellariiform/Pelecaniform evolution.

[2] Excavations of the site in the twentieth century produced a rich yield of Eocene mammals and many shark teeth.