Moravia occupies an exceptional position in Central Europe. All the highlands in the west and east of this part of Europe run west–east, and therefore form a kind of filter, making north–south or south north movement more difficult. Only Moravia with the depression of the westernmost Outer Subcarpathia, wide, between the Bohemian Massif and the Outer Western Carpathians (gripping the meridian at a constant angle of 30°), provides a comfortable connection between the Danubian and Polish regions, and this area is thus of great importance in terms of the possible migration routes of large mammals – both as regards periodically recurring seasonal migrations triggered by climatic oscillations in the prehistory, when permanent settlement started.