Cretaceaous flint from Brzoza village : 3D documentation Upper Cretaceous
Krzemień kredowy : dokumentacja [3D] górna kreda
Krzemień kredowy : dokumentacja [3D] górna kreda
Nointel : 2D documentation Flint mine. Flint was extracted from shallow shafts, sometimes with short walkways
Cretaceaous flint from Brzoza village : 2D documentation Upper Cretaceous
Cretaceaous flint from Brzoza village : 2D documentation Upper Cretaceous
Cretaceaous flint from Brzoza village : 2D documentation Upper Cretaceous
Cretaceous flint from Rijckholt-St.Geertruid mine : 2D documentation Upper Cretaceous (Maastrichtian)
Cretaceous flint from Rijckholt-St.Geertruid mine : 2D documentation Upper Cretaceous (Maastrichtian)