Mährische Pforte
The Slavs arrived in Bohemia in the 6th century after it having been vacated by the westward movement of Germanic tribes during the Migration Period. According to historian Dušan Třeštík, they advanced through the Moravian Gate ("Moravská brána") valley and in the year 530 moved into Eastern Bohemia, along the rivers Labe (Elbe) and Vltava (Moldau) further into Central Bohemia. Many historians support the theory of a further wave of Slavs coming from the south during the first half of the 7th century. They fought with neighboring Avars until the coming of Samo.