The Kuştepe-Mound fort was a component of an outer fortification system, which together with Küçük Höyük fort and walls had completely encircled the Lower Town.
Sources:
- Charles Brian Rose, Fieldwork at Phrygian Gordion, 2013–2015, American Journal of Archaeology Vol. 121, No. 1 (January 2017), pp. 135-178 - http://www.ajaonline.org/sites/default/files/1211_Rose.pdf
- Brendan Burke: The Rebuilt Citadel at Gordion: Building A and the Mosaic Building Complex, in: The Archaeology of Phrygian Gordion, Royal City of Midas: Gordion Special Studies 7, University of Pennsylvania Press 2013, pp. 203-218