The cascade of waterfalls in the vicinity of Antalya is formed by the Duden River - one of the rivers in the south of Anatolia. The Upper Duden Waterfall is located 12 km northeast of the city of Antalya, and the Lower Duden Waterfall is 10 km east of Antalya. The sources of the Duden River are two large karst springs - Kyrkgozler and Pinarbashi. Their waters merge into one stream and disappear in a karst funnel, after which the water stream flows 14 km underground and appears on the surface in the Varsak depression, after a short flow on the surface, the stream again goes underground, flows there 2 km and comes out under pressure to the surface at Dudenbashi. At the entrance to Dyudenbashi and the exit from Dyudenbashi, the Kepez hydropower complex was built. An artificial cascade was also built there. After Dudenbashi, east of the city of Antalya, water erupts from a height of 40 meters directly into the Mediterranean Sea, forming the Lower Duden Waterfall. A number of cafes and restaurants have been built near the waterfall for tourists to relax.