The Taunus is a mountain range in Hesse, Germany located north of Frankfurt. The tallest peak in the range is the 878 m high ''Großer Feldberg''. Other notable peaks are the ''Kleiner Feldberg'' (825 m) and the ''Altkönig'' (798 m).
The Taunus range spans the districts of Hochtaunuskreis, Main-Taunus, Rheingau-Taunus, Limburg-Weilburg, and Rhein-Lahn.
This range is known for is geothermal springs and mineral waters that formerly attracted members of the European aristocracy to its spa towns, as well as for having given its name to the Ford Taunus cars.
It is a relatively low range, with smooth, rounded mountains that are covered with forest. The Taunus is bounded by the river valleys of the Rhine, Main and Lahn rivers and it is part of the Rhenish Slate Mountains.
On the opposite side of the Rhine, The Taunus range is continued by the Hunsrück.
For geographical, ecological and geological purposes the Taunus is divided in three parts:
*Pre-Taunus ''(Vortaunus'' or ''Vordertaunus)'' in the south, next to the cities of Frankfurt am Main and Wiesbaden. This section is mainly made up of old sedimentary rocks with phyllite, greenschist and muscovite. The rocks are often given a greenish hue by the presence of epidote and chlorites.
*High Taunus ''(Hoher Taunus)''. The central region of the range where the highest peaks are found. Its geological composition includes slates, quartzite and sandstones.
*Back-Taunus ''(Hintertaunus)'' at its northern end is the biggest part by area. The geological materials that compose it include greywacke, claystones and siltstones.
The Taunus range is older than the Alps, for it originated during the Devonian period.〔(Zur geologischen Entstehung des Taunus )〕 The geological composition of the mountains was formed in a region covered by an ancient sea that was a few hundred kilometers wide and are mainly made up of phyllite, greenschist, gneiss, slates and sandstone.〔(Geologische Highlights im Geopark Westerwald-Lahn-Taunus )〕
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