Nera (Danube) Nera (Danube) The Nera (, or Нера, ) is a river running through Romania and Serbia. It is a left tributary of the Danube, which it joins near Banatska Palanka. The Nera rises in the Semenic mountains, the easternmost part of the Banat region, south of the city of Reșița, in the Caraș-Severin County of Romania. The river starts at the confluence of headwaters of the Nergana and Nerganița then flows straight to the south from the Piatra Grozbe peak, under which it springs. Reaching the village of Borlovenii Vechi, the Nera turns southwest, flowing between the Semenic and Banat
River Rhondda River Rhondda The River Rhondda () is a river in the Rhondda Valley, South Wales which has two major tributaries; the Rhondda Fawr () and the Rhondda Fach (). The river has two major tributaries: the Rhondda Fawr and the Rhondda Fach (respectively, the "big" and "little" Rhondda). Despite these names, both tributaries are of similar length. Both valleys display the U-shape cross-sections typical of glaciated valleys, having been eroded during successive ice ages. They cut deeply into the thick South Wales Coal measures which comprise sandstones and mudstones and coal seams of Carboniferous age. The whole form of the