The Zohreh Prehistoric Project (ZPP), a long-term archaeological researchprogramme focused on the river valley south of the modern city of Behbahanin Khuzestan Province, was launched in April 2015 (Figure 1). The valley,which lies in close proximity to the northern coast of the Persian Gulf, wassurveyed extensively during the early 1970s by Hans Nissen from the OrientalInstitute of the University of Chicago (Nissen & Redman 1971; Dittmann1984, 1986). The ZPP aims to develop full-coverage archaeological survey ofthe valley, focusing on the human landscape over time, mostly in relation tosettlement hierarchy and dynamics, modes of production and the emergence ofregional centres at the end of the fifth and beginning of the fourthmillennia BC. The focal point for the project is the principal site of theZohreh Valley, known as Tol-e Chega Sofla (39RN1Q22108; thesite was previously registered as Chogha Sofla, BZ.71 (Dittmann 1984: 110).We have changed this to reflect its local name. The digital reference is theunique Iranian archaeology map registration number.