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In the year 2006 we investigated mechanical compaction of soil on the mountain pasture (altitude 920 m). Penetration resistance was researched on the compacted places, by cattle hoofs (breed Charolais), which were compared with unmanaged place after deforested. We investigated, that penetration resistant increasing with depth. However intensive increase of compaction was registered exclusively into certain depth. Soil compaction of unmanaged place and cutting - grazing place had high signifi cation of lower penetration resistant (MPa) to compare with place year-long used by grazing.