Its elevation is 1200 m. According to the 1074-dated dictionary Dīwān ul-Lughat al-Turk, haymana means prairie in Turkish.

[4] Archaeological excavations were launched in Gavur Kalesi, a castle situated in the village of Dereköy, in the years 1930 and 1998.

Besides, the tumuli located in Türkhöyük and Oyaca villages prove that the area was also inhabited during the Hittite period.

[5] After the periods of the Roman and Byzantine rule, the area was captured by the Seljuk Turks in 1127.

After a brief period of Timurid rule in the wake of the Battle of Ankara in 1402, it was re-captured by the Ottomans.