A series of mountain chains traverse the park from east to west and from north to south, resembling an imposing amphitheater.

Inside the protected area the highest peak is cerro Heros (Heros hill) at 2,770 m. Nearby, but outside the boundary of the park lies the imposing cerro San Lorenzo (Monte San Lorenzo) which reaches 3,707 m in height,[5] which is generally covered by clouds.

To the north of the lake Belgrano the cerro Leon (Lion hill) reaches 1,380 m and to the east of the same lake, the Gorra de Vasco (Basque peak) reaches 1,140 m. Inside the Park the Sierra Colorada (Red plain) is distinguished, of some 1,200 m, whose western slope is very abrupt, and whose coloring gives its name.

Another small wildcat found within the park is the gato huiña (Oncifelis guigna) which is also endangered.

Other species include guanaco, puma (cougar), Patagonian fox, dwarf armadillo, ferret, skunk, tuco-tuco and south Andean deer.