When discovered, it was partially collapsed and eroded by the
Sirwan River. The site contained Middle Paleolithic archaeological deposits of about 2.30 m thick along back walls. Large-scale excavations at the site yielded two main Middle Paleolithic cultural layers. Numerous fireplaces and rich faunal and lithic assemblages were found during the excavation. The faunal assemblages are dominated by goat/sheep that show burning, cut marks, and other anthropogenic modifications. Based on the preliminary techno-typological study of the Darai lithic assemblage, the Middle Paleolithic flake-based industry of Darai generally resembles the Zagros Mousterian. The
Levallois and discoid methods have been used to produce blanks for tools such as Mousterian points and side scrapers. It seems Darai was a focal point for
Neanderthal habitation that resulted in the concentration of a thick accumulation of archaeological deposits in this location. ==References==