We find ourselves at one edge of Bulgaria, very close to the city of Silistra, where the Danube leaves the territory of the country and continues through Romania to flow into the Black Sea. Only 17 km from the northernmost Bulgarian city, the air is..
In the 20th century, the Dragoman marsh located 35 km from Sofia was almost completely drained for agricultural purposes after the construction of drainage canals and a pumping station in the area. Later, the natural landmark was restored with..
