The Visočica or Visochitsa ("Височица") is , originating from the mountain of , a part of Stara Planina, near Kom Peak, just a few kilometers away from the Serbian border. The river, in this section known also as "Barlska Reka" from the name of the village of , flows to the south, reaching the region of eastern Bulgaria and the northern slopes of the Gora mountain, where it turns west and enters the Visok depression at the village of . Soon after it turns west, the Visočica crosses the Bulgarian-Serbian border.