Sliven Valley
| Sliven Valley | |
|---|---|
| А view of the valley from the Balkan Mountains | |
| Coordinates: 42°39′26″N 26°18′58″E / 42.65722°N 26.31611°E | |
| Location | Bulgaria | 
| Area | |
| • Total | 830 km2 (320 sq mi) | 
| Dimensions | |
| • Length | 70 km (43 mi) | 
| • Width | 15 km (9.3 mi) | 
Sliven Valley (Bulgarian: Сливенска котловина) 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 second largest of them, after the Sofia Valley.