Country/territory: Bulgaria
Central coordinates (latitude / longitude): 42°02'53"N (42.0483°) / 026°43'30"E (26.7250°)
Area (reported): 34,864 hectares / 348.64 km² / 86,151 acres / 134.61 square miles
Area (GIS-derived): 34,886 hectares / 348.86 km² / 86,205 acres / 134.70 square miles
Altitude: 121–549 m (397–1,801 ft)