The Arkutino reserve, also known as Mecheshko Blato (Bear's Swamp). Lies within the limits of the Ropotamo natural reserve, between the resort of Duni and the town of Primorsko. Wild and very spacious, it is a swamp-lagoon and protected nature territory, and is a clothing-optional beach.

The unspoilt Black Sea area features amazing sand dunes, sand lilies. Its sand is rather fine, but the sea waters there can be dangerous during windy days. There are incredible views in the distance, of the dense forest as well as one of the five islands in the Black Sea – Snake Island.