 Between the villages of Devič and Čečina, the Crna Reka and Brusnička reka meet and continue to the north under the name of Studenica.The Studenica carved a long and deep gorge-like valley, characterized by the arc-shaped stretching in the west–east direction, between the Radočelo (on the south) and Čemerno (on the north) mountains.The villages of Usilje, Pridvorica, Mizdraci, Mlanča and Miliće are located in the valley, so as the Isposnica Monastery and the cave on Čemerno mountain.