 The Soor discharges into the Hill just before Eupen, at a place called the Black Bridge ("Schwarze Brücke").During the Roman era the river was a boundary between the administrative regions of Tongeren ("Civitas Tungrorum") and Cologne ("Civitas Agrippinensium").From the High Middle Ages to 1795 it was the border between the territorial lordships that divided up the region of the High Fens.