[1] The river takes its source under the name Sakarsko dere at an altitude of 713 m at the southern foothills of the summit of Bogovets (713 m) in the Sakar mountain range.

Until the village of Orlov Dol it flows northwards in a deep valley.

The river then turns west and flows in a wide valley with a small longitudinal slope.

It flows into the Sazliyka at an altitude of 86 m south of the town of Galabovo.

There are five villages along its course: Orlov Dol and Vladimirovo in Topolovgrad Municipality of Haskovo Province, and Madrets, Iskritsa and Obruchishte in Galabovo Municipality of Stara Zagora Province.