Many Palaeolithic sites have been reported from previous archaeological investigations in the Holeylan Plain in the west of Iran. As a common belief, the Palaeolithic chronology of this area begins from the late Lower Palaeolithic to the Epipalaeolithic. However, earlier studies considered many sites devoid of industries like Mousterian or Levallois. Therefore, a recent exploration was carried out which revealed a new phase in the stone tool technology of these sites, i.e., the Mousterian industry. The present paper is an attempt to bring forth the new chronology and discuss the typo-technology of the artefacts at these sites.
