I've been there 10 times. I've taken a lot of people. I didn't see anyone who went there and didn't feel peace. For this trip, first go to yusa hill, follow it on the Anatolian slope, then go to yoros castle from there to kırklar sultan. Those who want to feel peaceful and different, try it, you feel the hope in your soul.
It is the office of the prophet Yusha, located on a hill that was considered sacred not only in the Muslim, but also in the pagan, ancient Roman and Christian periods.
The Ziyarat of the Prophet Yusha (peace be upon Him).
The peculiarity is that he was under 30 meters tall, he is mentioned in the Surah Kahf (Cave) of the Holy Quran.