Sredna Gora is a mountain range in central Bulgaria, situated south of and parallel to the Balkan Mountains and extending from the river Iskar to the west and the elbow of river Tundzha north of the c
A view of Sredna Gora near Hisarya
Ihtimanska Sredna Gora from the summit of Opor
Sliven Valley is situated in eastern central Bulgaria. It is named after the city of Sliven, its main settlement. It is the ninth of the eleven Sub-Balkan valleys in direction west–east and is the sec
А view of the valley from the Balkan Mountains
The Balkan Mountains seen from a marshy area in the Sliven Valley
The City of Hall of Sliven