The High Taunus runs as a mountain ridge from southwest to northeast from the Middle Rhine opposite the Bingen Forest to the Wetterau before Bad Nauheim for a distance of 75 kilometres; its average widths being only 4 to 5 km. The narrowest point on the ridge is only 2.4 km and is located on the heights of the Saalburg. At 7 km, the widest part of the natural region lies between Presberg and Rüdesheim am Rhein. From the Main-Taunus Plain (ca. sea level (NHN)) in the south the ridge zone climbs rapidly and steeply to over 600 to 879 m, and rises above the plain by 400 to 600 metres (m). To the north the Taunus ridge descends steeply but only around 200 to 300 m to the Lower Taunus.