 The "Moosbach" rises at a height of in the central Wasgau in the region known as the Dahner Felsenland, southwest of the Kaletschkopf hill () in a woodland within the "Moosbachtal" Nature reserve.Its source is a spring called the "Moosbrunnen".It initially presses northwards through a narrow, wooded valley between the Red Rock ("Roten Felsen") on the left and the "Kaletschkopf" on the right.