The Westerwald is a low mountain range on the right bank of the river Rhine in the German federal states of Rhineland-Palatinate, Hesse and North Rhine-Westphalia. It is a part of the Rhenish Massif. Its highest elevation, at 657 m above sea level, is the Fuchskaute in the High Westerwald.
Tourist attractions include the Dornburg, site of some Celtic ruins from La Tène times, found in the community of the same name, and Limburg an der Lahn, a town with a mediaeval centre.
The geologically old, heavily eroded range of the Westerwald is in its northern parts overlaid by a volcanic upland made of Neogene basalt layers.
Wikipedia https://en.wikipedia.org/wiki/Westerwald
Coordinates 50°34'11.709" N 7°46'59.173" E