Double platform blade core Pleistocene, Late Palaeolithic (Alleröd - Younger Dryas, GI-1a - GS-1)
Truncated blade Pleistocene, Late Palaeolithic (Alleröd - Younger Dryas, GI-1a - GS-1)
Chocolate' flint : 2D documentation Upper Jurassic
Cretaceous flint from Rijckholt-St.Geertruid mine : 2D documentation Upper Cretaceous (Maastrichtian)
Chocolate' flint : 3D documentation Upper Jurassic
Cretaceous flint from Rijckholt-St.Geertruid mine : 3D documentation Upper Cretaceous (Maastrichtian)