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Located in the Köyceğiz district of Muğla, this unique natural lake was formed by tectonic movements and alluvial accumulation, where fresh and saltwater mix.

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Köyceğiz Lake, located in the Köyceğiz district of Muğla province, is a large freshwater lake formed by tectonic depression and connected to the Mediterranean Sea via the Dalyan Delta. The formation of the lake began with tectonic movements as part of the Menderes graben system, and over time, it took its current form with alluvial accumulation and materials brought by the Dalyan Stream. The area around the lake, especially on its southwestern shores, is rich in geothermal resources, which significantly contribute to the lake's ecosystem and the surrounding natural life. Thermal facilities like Sultaniye Hot Springs have been serving those seeking healing for centuries thanks to these geothermal resources. The lake's water mixes with the Mediterranean Sea through the Dalyan Stream, creating a unique ecosystem where fresh and saltwater merge. This allows both freshwater and saltwater organisms to coexist in and around the lake. It is an important breeding and living area, especially for endangered loggerhead sea turtles (Caretta caretta) and Nile softshell turtles. The area around the lake is home to forests covered with oriental sweetgum trees (Liquidambar orientalis). These trees are endemic species, used particularly in the cosmetics and pharmaceutical industries.

tips_and_updatesVisit Tips

• Explore the natural beauties and Dalyan Delta by taking a boat tour around the lake.
• Relax and benefit from the healing waters at Sultaniye Hot Springs.
• Taste local delicacies at restaurants by the lake, especially try the fish dishes.
• Visit the ancient city of Kaunos to see the historical texture of the region up close.
• Visit the local market in Köyceğiz center to buy organic products and handicrafts.