The city continued to expand during period F, and reached the size of 130 hectares. Four mass graves dating to c. 3800–3600 BC were discovered in the submound, Tell Majnuna, north of the main tell, and they suggest that the process of urbanization was accompanied by internal social stress, and an increase in the organization of warfare. The first half of period F (designated "LC3"), saw the erection of the Eye Temple, which was named for the thousands of small alabaster "Eye idols" figurines discovered in it. Those idols were also found in area "TW".