Today I have posted an article on Mount Nemrut at biblicalstudies.info. I think you will find the article of interest.
The Kingdom of Commagene was important in the first century B.C., and has connections with Alexander the Great and Darius, and with one of the characters mentioned in the New Testament. I think you will enjoy it.
This photo shows the approach to the top of Mount Nemrut in Eastern Turkey. The Euphrates River valley is far below in the haze.