The River Mlava flows through Homolje – the mountain region of north east Central Serbia. It originates in Zagubica and part of its course runs through the famous Gornjak Gorge. This canyon is named after the fresh Gornjak wind, which blows along the river through the ravine surrounded by mountains. Visitors are amazed at the very entrance to the gorge by the ruins of the Blagovestenja (Annunciation) Monastery, which seem to float in front of the vertical rock face it was built into. On the other side of the river, just a hundred steps from Annunciation Monastery, rises another jewel of this area: Gornjak Monastery, the endowment of Serbian Prince Lazar.