It sounds like you're referring to the phrase "Çıplaklar Kampı" (Turkish for "Nudist Camp" or literally "Camp of the Naked").
Pro Tip: Use a Müze Kart for entry if you also plan to explore the magnificent Ancient City of Patara located right behind the dunes. 3. Modern Alternatives & "Quiet" Spots
Preparing for Your Stay
If you have decided to book a vacation at a Ciplaklar Kampi, here is your packing list:
Naturist spaces strictly separate social nudity from sexual activity. Top Naturist Destinations