Switzerland in the Roman era after which the area began to be occupied by Germanic peoples. The Swiss plateau, within the natural borders of the Alps to the South and East, Lake Geneva and the Rhône to the west and the Rhine to the north, was recognized as a contiguous territory by Julius Caesar. This area had been dominated by the La Tène culture since the 5th century BC, settled by a mostly Celtic population (Gauls), of which the Helvetii were the most numerous, but which also included the Rauraci in north-west Switzerland centered on Basel, and the Allobroges around Geneva. South of the Swiss
Périgny River River, Lake Waswanipi; The Périgny River rises from a forest stream near Highway 1018 (North-South direction) at the foot of the Waswanipi Hills, at: From its source, the "Périgny River" flows on according to the following segments: The Périgny River flows into a river bend on the south shore of the [O'Sullivan River], which generally flows northward to the south shore of Lake Waswanipi. From this mouth, the current flows north on the Lake Waswanipi to its mouth. From there, the current flows first north through the Waswanipi River, then west to the east shore of Goéland Lake (Waswanipi River).