Hautes Fagnes
Several rivers have their sources in the High Fens: the Vesdre, Hoëgne, Warche, Gileppe, Eau Rouge, Amblève, Our, Kyll, and Rur. In winter all the water sources freeze into snow making the High Fens one of the best ski resorts in Belgium. During winter the swamps appear as if "wrapped in white fluffy snow shawl".