Jajce is surrounded by medium high mountains: Hum, Rance/Hrance, Dnoluka’s mountain, Bukovica – outgrowth of Radalj and Cusine – part of Gorica.

Mountains provide all possible forms of an active time spending in nature, like hiking, botanical research, alpinism, collecting medicinal herbs and mushrooms, caving, mountain biking, skiing and canyoning.

Among various flora of mountain Hum, special attention deserve three endemic plants: Star bellflower (Onosma stellulata), Hofmann bellflower (symphyandra Hofmannii) and yellowish Younger (Corydalis ochroleuca).