The river originates northeast of
Prolom Banja, near the Sokolovica village, on the northern tip of the
Radan mountain, as the ('Big River'). It flows eastward, between the mountains of Radan (to the south) and
Pasjača (to the north), next to the villages of Dobra Voda, Magaš, Brestovac and Velika Crkvica, before it reaches the regional center of
Bojnik, after which, for the rest of its 46 km course, it is known as the Pusta River. From Bojnik, the river bends north, next to the villages of Dragovac,
Pridvorica,
Đinđuša,
Lapotince,
Kacabać, Kosančić,
Donje Brijanje, Međa and Draškovac, before it empties into the South Morava, near the village of
Pukovac. The Pusta River drains an area of 590 km2, belongs to the
Black Sea drainage basin, and is not navigable. == Region ==