Yavorivskiy National Park is located in the Ukrainian Roztocze, one of the most interesting physiographic regions of Western Ukraine. Ukrainian Roztocze is a narrow (average 25 km (16 mi)) range of hills 75 km (47 mi) long, which rises sharply to the north of the Lesser Polissya. In the southeastern part of it the main European watershed, on the slopes of which originate river belonging to the basins of two seas - the Black Sea and the Baltic.