Fort Saldum remains are located on the left Kožica stream bank at its confluence into the Danube, 4km downstream from Dobra. This area was slightlz elevated and the locals used to call it “Gradac“. It is not mentioned in historical sources.
Archaeological excavations of the locality are made in the period from 1967 to 1970, when the fort was partially explored. It had a base of 43,5 х 31,2 m dimensions in a shape of irregular rectangle, with four towers on the corners, three of which were circular and the fourth was in the northeast and shaped as a smaller single – nave church with a semicircular apse in the east.
There is insufficient number of elements to state when Saldum was founded, but certainly the first fort was made of soil and palisade and then had three more phases, last of which dates from the great Justinian restoration (527-565). After the restoration it was completely derelict. In the Kožica stream valley, not far from Saldum, partition walls remains were discovered (closures) of the total lenght of about 400m, which additionally shielded the stream valley from possible enemy intrusions.
The entire locality is sunk due to PP Đerdap construction and increased water level.