The results of research on forest soils in the dwarf pine forest altitudinal zone of the Giant Mts. are presented. Investigations were carried out in the western and eastern part of the Giant Mts. on 11 permanent research plots located in dwarf pine (Pinus mugo) stands of autochthonous and allochthonous origin and different age (15170 years). These locations are characterized by the group of forest types 9Z (Dwarf Pine), management unit (MU) 03 and air-pollution zone A. The altitude of this area ranges between 1340 and 1 480 m above sea level. The results documented extremely unfavourable conditions for pedogenesis at these localities, extreme soil chemistry and low nutrient content. But the soil condition was somewhat better in comparison with beech and spruce stands situated at lower altitudes. It is due to less intensive chemical weathering, lower acidification and lower nutrient losses by leaching. The intensity of pedogenesis was influenced by older stands to a greater extent.