During rescue excavations, 17 burial facilities were discovered in the necropolis of the Roman colony of Ulpia Ratiaria (near Archar village in the region of Vidin), of which five tombs and 12 pit graves. This was announced by Zdravko Dimitrov from the National Archaeological Institute with Museum - BAS, quoted by BTA. 

Archaeological work on the necropolis has continued after being interrupted in the late 1960s and early 1970s. Dimitrov points out that the tombs are extremely massive, even monumental - with brick construction and semi-cylindrical vaults. The largest tomb, which is a two-chamber tomb, is of the type of Roman family mausoleums, with an area of about 45 square meters. The walls are between 70 and 80 cm wide, like those of the Roman buildings.