The Meuse rises on the Langres Plateau in France from where it flows northwards past Sedan (the head of navigation) and Charleville-Mézières into Belgium. At Namur it is joined by the River Sambre. Beyond Namur the Meuse winds eastwards, skirting the Ardennes, and passes Liège before turning north. The river then forms part of the Belgian-Dutch border, except that at Maastricht the border lies further to the west. In the Netherlands it continues northwards past Venlo, then turns towards the west, merging with the Rhine into an extensive delta before finally flowing into the North Sea via the Nieuwe Waterweg and the Hollands Diep. The river divides near Heusden into the Afgedamde Maas on the right and the Bergse Maas on the left.