“…Nevertheless, the recurrent presence of artefacts that could not be attributed to any known obsidian source has raised the possibility of potential outcrops located in Northwestern Iran. The suggested location for these possible obsidian sources notably includes the Sahand and Sabalan areas (Abedi, 2015, Agha‐Aligol et al, 2015, Burney, 1964, Khademi Nadooshan et al, 2007, 2010, 2013, Khazaee et al, 2014). Recent studies have started to address these claims, identifying several outcrops of reasonable quality for knapping in the Urmiah lake (i.e., Leylan and Gonag Giran; Niknami et al, 2010) and Bostanabad regions (i.e., Tajaraq A and B; Abedi, Vosough, et al, 2018).…”