Deep Mechanical Coring Delivers New Pleistocene Archaeological Sites up to Eight Metres Below Surface in the Flemish Valley (Belgium)

Our study reveals multiple signals of Palaeolithic occupation in the Flemish Valley, a large depression in coastal northwestern Europe with an extremely sparse Pleistocene archaeological record until now. We show that mechanical coring can reveal archaeological evidence of hominin presence from deep palaeolandscapes that are inaccessible for standard survey techniques. At nine out of 41 coring sites, we encountered a total number of 56 lithic artefacts at depths up to 8 m below the surface. We conclude that this unexpected success rate indicates a widespread archaeological record. We believe that this survey method has the potential to increase the number of Palaeolithic sites in northwestern Europe by an order of magnitude, leading to a very different image of Pleistocene hominin settlement in this vast European lowland.