Tasli Gecit Höyük was founded ca 3000 BC EBA and existed as a big city without a defense system until ca 1800 BC .
See:
- Giacomo Benati, Federico Zaina: A Late Bronze Age I Fortress at Tasli Geçit Hoyuk and the Defensive Architecture of Anatolia and the Northern Levant During the 2nd Millennium BC, OCNUS 21, 2013, pp. 9-29
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Höyüğü Kurtarma Kazıları 2022_43. KST. By Atilla Engin. https://www.academia.edu/120776688/Ta%C5%9Fl%C4%B1ge%C3%A7it_H%C3%B6y%C3%BC%C4%9F%C3%BC_Kurtarma_Kaz%C4%B1lar%C4%B1_2022_43_KST