Core related by-products-False semicrest examples in Sibudu, layer Gr.

These blanks are the result from a change in the direction of blank removal with the crest representing a previous overhang. On the top left schematic drawing explaining the production of these types of blanks. 1, 2, 3 and 4 dolerite examples. 1, 2 and 3 are coming from big blade prismatic cores as the one shown in Fig 8. 5 and 6. Hornfels examples. Scale 1 cm.