Transylvania modern Romania. The plateau is almost entirely surrounded by the Eastern, Southern and Romanian Western branches of the Carpathian Mountains. The area includes the Transylvanian Plain. Other areas to the west and north are widely considered part of Transylvania. In common reference, the Western border of Transylvania has come to be identified with the present Romanian-Hungarian border, settled in the 1920 Treaty of Trianon, though geographically the two are not identical. Ethnographic areas: The area of the historical Voivodeship is . The regions granted to Romania in 1920 covered 23 counties including nearly (102,787–103,093 km in Hungarian sources and 102,200
Transylvania Mounds and in height. The site underwent limited archaeological testing in the 1960s. These tests dated occupation of the site about 700–1200 CE during the Coles Creek period. Other ceramics discovered at the site were dated to 1200–1541 during the Plaquemine Mississippian period. A series of radiocarbon samples returned dates between 1048 and 1411 CE. These investigations prompted archaeologists to use the Transylvania site as the type site for the "Transylvania Phase (1500-1680 CE)" of the local Tensas Basin Plaquemine Mississippian chronology. When the site was mapped in 2000 investigators were able to identify six remaining mounds. Transylvania Mounds Transylvania Mounds