Old Castle of Justinianus currently known Yazıcıoğlu Kalesi is located in the middle of rocky mountainous area.
Sources:
- https://sivrihisar.com.tr/sivrihisar-kalesi/
- Kaan Gedik, Revealing the values attributed by the inhabitants in historic urban landscapes: the case of Sivrihisar, Eskişehir in Turkey, Thesis (M.Arch.) -- Graduate School of Natural and Applied Sciences. Conservation of Cultural Heritage in Architecture., Middle East Technical University, 2019.