The Rhenish Massif, Rhine Massif or Rhenish Uplands is a geologic massif in western Germany, eastern Belgium, Luxembourg and northeastern France. It is drained centrally, south to north by the river Rhine and a few of its tributaries.
Satellite image with outlines (grey-drawn outline) of the Rhenish Slate Mountains (green trees). Above left the mouth of the Rhine into the North Sea.