Analysis of information sources in references of the Wikipedia article "Γιλανκαλέ" in Greek language version.
...a medieval fortress, YILAN KALESI, probably built in the reign of Leon II, king of Little Armenia, towards the end of the 12th century near the right bank of the Ceyhan.
...Levonkla or Yilankale...
YILAN KALE (Castle of the Snakes). A huge thirteenth-century fortress standing high above the Pyramus river and overlooking the plain of Adana. The castle was a key stronghold for the Armenian rulers who controlled this region, and the remaining structure probably dates from the first half of the thirteenth century.
Beyond here you'll see an Armenian castle on top of a mountain, 3 km to the south of the main road – the Yılan Kalesi, or "Snake Castle" (always open; &0.50).
Yılan Kalesi (Snake Castle): It is located on a hill and champaign between Misis and Ceyhan. The castle, positioned on historical invasion and commerce road which connects Adana, Misis, Payas and Antalya through Gülek Straight, is the first chain of mountain castle chains.
Individual Armenian Castles found in the area of Adana, "Yilan Kale" and "Toprakkale, are the most outstanding ones.
Yılan Kalesi (Snake Castle): It is located on a hill and champaign between Misis and Ceyhan. The castle, positioned on historical invasion and commerce road which connects Adana, Misis, Payas and Antalya through Gülek Straight, is the first chain of mountain castle chains.
