Kocabaş or Topbaş kale Phrygian fortress was erected ca 1,8 km Norh-East to Midas Sehri.
See:
- Caroline Henriette Emilie Haspels, The Highlands of Phrygia. Sites and Monuments, Princeton 1971
- Yusuf Polat, The Phrygian Rock Cut Religious Monument, BAR International S,eries 1739, 2008