The Zalomka River basin, particularly as part of the Nevesinjsko Polje, is a tectonic depression that is bounded by mountain ranges of different heights and highlands. The southern reaches of the polje is framed by relatively low mountains, while bordering on the Velež (mountain) on the east, in the north with the Crvanj mountain and the Morina plateau on the northeast, on the east-southeast are the mountains of Bjelasnica and Bab. The exact boundaries of the plateau and watersheds are difficult to determine in the karst due to the extreme porosity and cracking of the limestone that drains water underground.