Abstract: The French-Iranian Paleoanthropological Project (FIPP) conducted in 2005 a survey in the provinces of Teheran and Mazandaran (Northern Iran), which are almost virgin zone of paleolithic discoveries. The FIPP discovered three open-air localities in an alluvial context. The Moghanak and Otchounak localities delivered 59 artifacts collected on surface, attributed to Mousterian or ante-Mousterian. These assemblages showed conceptions of different technical natures, generally not very elaborated. The site of Garm Roud 2 is a good stratigraphic framework and is dated to 28,486 ± 190 cal. BP. The 113 artefacts available clearly present an emphasis on bladelet debitage. Comparisons make possible to bring the assemblage closer to Baradosti...