the toplica originates under the name of "duboka" from the eastern slopes of the kopaonik mountain, just south of the highest peak, pančićev vrh. it flows to the southeast, on the western slopes of the lepa gora mountain, next to the villages of merćez, selova, žuč, miljeviće and dankoviće. at the monastery of mačkovac, it reaches the northern side of the radan mountain and turns to the east. this is also where the toplica receives from the right its major tributary, kosanica. near the mouth are located city of kuršumlija and medieval ruins of "marina kula" ("the tower of mara"), and this is where toplica region begins.