Excavations of many Slavic Kurgans and tombs in the Carpathian Mountains in the 1930s and 1960s were also attributed to the White Croats. Compared to other East Slavic tribes, the area of the Croats stands out because of very present tiled tombs, and in the 11th and 13th century their appearance in Western Dnieper region is attributed to the Croats, and sometimes also Tivertsi, and Ulichs. Scholars attribute to the Croats also the forts West and North of river Prut and in Northern Bukovina; Revno, Červona Dibrova, Kodin, Bila, Široka Poljana, Klokučka, Grobnica, Červenovo, Orosijevo, Červone, Ungvár. In the territory of Czech Republic, a significant number of graves with kurgans dated 8th-10th century have been found around the Elbe river where was the presumed territory by the White Croats and Zlicans, as well among Dulebes in the South, and Moravians in the East.