The national park covers an area of 3,155 ha (7,800 acres) and is located at İğneada town on the Turkish-Bulgarian border at 25 km (16 mi) far from Demirköy District district of Kırklareli Province.[1]
Streams running down from the Strandzha mountain range towards Black Sea formed alluvium on the shore, where floodplain (Turkish: longoz) occurred due to seasonal floodings.
The national park is a rare ecosystem, which consists of marsh, swamp, lakes and coastal sand dunes. The Strandzha mountain range is situated in the south and west. There are five lakes with aquatic plant. Lake Erikli covering 43 ha (110 acres) is a lagoon, which gets separated from the sea in the summer months as a result of drought. Lake Mert of 266 ha (660 acres) area is formed by Çavuşdere creek at its mouth. Lake Saka is a small lake of 5 ha (12 acres) situated in the south of the national park between the floodplain and the dunes. The two other lakes are Lake Hamam of size 19 ha (47 acres) and Lake Pedina of 10 ha (25 acres). The sand dunes are situated on both sides of İğneada town. The dunes in the north stretch out from east of Lake Erikli to İğneada. The southern dunes run from the Lake Mert's sea connection to the south of Lake Saka, reaching a width of 50–60 m (160–200 ft) at some places.[2]
Ecosystem
Flora
The 10 km (6.2 mi) long dunes with the plant species, unique to the southwestern Black Sea region, are of great importance. The flora of dunes in the belt between the lakes, marsh and the sea are under protection by international agreement. The national park is also habitat for swamp and non-evergreen mixed wood. Vine species are the most distinct plants of the forest. Sprecies of European ash (Fraxinus excelsior), oak (Quercus), alder (Alnus), beech (Fagaceae) and maple (Aceraceae) are trees found in the national park forest.[2]
Fauna
Trout (Oncorhynchus), smelt (Osmeridae), grey mullet (Mugilidae) are fish species of the national park.[2]