In prehistoric times the hills were an island in the Pannonian Sea which covered the whole of northern Serbia. They also have a rich cultural history: no fewer than 16 orthodox monasteries are located here, and traditional farmsteads (Salas) provide a hearty welcome to visitors. The hills comprise a variety of habitats, including mixed forest, grazed steppe, farmland and meadows.

Birds include: Imperial Eagle, Goshawk, Honey Buzzard, Sparrowhawk, Hobby, Saker Falcon, Wood Lark, Crested Lark, Black, Grey-headed, Syrian and Middle Spotted Woodpecker, Hoopoe, Golden Oriole, European Bee-eater, Short-toed Treecreeper, Collared Flycatcher, Hawfinch, Ortolan Bunting, Black-headed Bunting.

One interesting mammal can be seen at the adjoining grasslands: the Ground Squirrel. It is not only fun to watch, but also a major food source for the Imperial Eagle.