Xanthos River in Saklikent Gorge Canyon of Taurus Mountains in Turkey
"The Taurus Mountains are a mountain complex in southern Turkey, separating the Mediterranean coastal region of southern Turkey from the central Anatolian Plateau. The system extends along a curve from Lake Eğirdir in the west to the upper reaches of the Euphrates and Tigris rivers in the east."Wikipedia, The Free Encyclopedia, "Taurus Mountains", https://en.wikipedia.org/wiki/Taurus_Mountains