France | Country ReportThe landscape is varied; about two thirds flat plains or gently rolling hills, and the rest mountainous. A broad plain covers most of northern and western France from the Belgian border in the northeast to Bayonne in the southwest, and it rises to uplands in Normandy, Brittany, and the east. This large plain is bounded on the south by the steeply rising ridges of the Pyrénées, on the southeast by the mountainous plateau of the Massif Central, and on the east by the rugged Alps, the low ridges of the Jura, and the rounded summits of the densely forested Vosges. The principal rivers are the Rhône in the south, the Loire and the Garonne in the west, the Seine in the north, and the Rhine, which forms part of France’s eastern border with Germany.