After the end of main Eo-Alpine orogenic movement, the area of Western Carpathians was still not so mountainous. In the Paleogene subsidence along the normal faults caused formation of grabens - intra-mountain Inner Carpathian Paleogene Basin and horsts present day mountain ranges. In the Neogene, further orogene movement in the external part of Carpathian arc caused formation of back-arc Pannonian Basin. Northern branches of Pannonian Basin were penetrating the Tatra-Fatra Area and formed inter-mountain basins. Simultaneously with the immersion of the horsts, ongoing and intense erosion is denuding the mountains and supplies the basin with clastic sediments. Among all of the rocks, the most erosion resistant were the crystalline schists and granites of the Tatric. Similar fold and thrust model of origin is known from the other areas of alpine system. In the English terminology, similar model is called Fault-block mountain, it is typical in the area of Basin and Range.