The Kurşunlu stream receives its water from the Kırkoluk springs originating from higher up Bozdağlar and the stream joins the Gediz River in the north of the Gediz Plain. This stream, flowing throught Paleosoic land and tmolos deposits along the northern slopes of the Bozdag Mountains flows through narrow and deep gorges as a result of vertical tectonic movement. Along the Kurşunlu valley it is possible to observe the litho-stratigraphic units which formed the Bozdag Mountains. This valley is also of great importance in terms of its flora, morphology and for its diverse landscape features.