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Wallonia, Belgium (50.15453 5.39918)
Wallonia is landlocked, with an area of 16,844 km2 (6,504 sq mi), or 55 percent of the total area of Belgium. The Sambre and Meuse valley, from Liège (70 m (230 ft)) to Charleroi (120 m (390 ft)) is an entrenched river in a fault line which separates Middle Belgium (elevation 100–200 m (330–660 ft)) and High Belgium (200–700 m (660–2,300 ft)). This fault line corresponds to a part of the southern coast of the late London-Brabant Massif. The valley, along with Haine and Vesdre valleys form the sillon industriel, the historical centre of the Belgian coalmining and steelmaking industry, and is also called the Walloon industrial backbone. Due to their long industrial historic record, several segments of the valley have received specific names: Borinage, around Mons, le Centre, around La Louvière, the Pays noir, around Charleroi and the Basse-Sambre, near Namur.