In the Brnjica river valley at about 500 to 700m away from its confluence into the Danube the remains of the Roman partition walls (enclosures) were discovered in two places. The locality was partially explored in 1970 in the time of PP Đerdap construction. A wall 1,2 m thick and 6,5m long was discovered together another of 31m in length and 1,5m thick. They were built from crushed stone and mud mortar. In the system of Roman military construction on the Danube such walls had a role of a partition to disable the enemy soldiers from easy entrance through important strategic points.