Kömürcü-Kaletepe is a Neolithic workshop existing near the obsidian mine. It covers the area 150x150 m - it was a large obsidian working center.
See:
- Nur Balkan-Atlı, Steve Kuhn, Laurence Astruc, Michel Grenet, Göllü Dağ Survey 2010 in: Anatolia Antiqua XIX (2011), p. 259-278
- Marina Milic and Tristan Carter, A long-term perspective in: Stone Tools in Transition: From Hunter-Gatherers to Farming Societies in the Near East, Servei de Publicacions de la Universitat Autònoma de Barcelona, 2014, pp. 495-506- https://www.academia.edu/5389781m38.287821, 34.563859