Blade-flake core with changed orientation Pleistocene, Late Palaeolithic (Alleröd - Younger Dryas, GI-1a - GS-1)
Cretaceous flint from Rijckholt-St.Geertruid mine : 2D documentation Upper Cretaceous (Maastrichtian)
Cretaceous flint from Rijckholt-St.Geertruid mine : 3D documentation Upper Cretaceous (Maastrichtian)