Source google image: https://www.researchgate.net/profile/Laurence_Bourguignon/publication/261796326/figure/fig4/AS:480453586100225@1491560469426/Industrie-lithique-de-Combe-Brune-3-matrices-mixtes-bifaciales-1-et-2-matrice.png
Combe brune
Source google image: https://www.researchgate.net/profile/Laurence_Bourguignon/publication/261796326/figure/fig4/AS:480453586100225@1491560469426/Industrie-lithique-de-Combe-Brune-3-matrices-mixtes-bifaciales-1-et-2-matrice.png