The island preserves an infinity of lake ecosystems, a unique and priceless heritage. One of the most striking 'wetlands', among the largest in terms of size and importance, is the Sarrabus lagoon complex, a historical region on the south-eastern coast. It is composed of about ten ponds of various sizes, each with specific natural features and levels of biodiversity. Their placid waters unfold close to beaches of fine and soft sand, along the 'old' east Sardinian road (state road 125) in the territories of Muravera and Villaputzu, towns lying in the plain formed by the mouth of the Flumendosa. To the north of the river, up to Quirra, you can visit the ponds of Villaputzu; to the south are the 1500 hectares of Muraverese lagoons surrounded by sandy dunes covered by a pine forest.