 Obereisenbach, Sankt Julian’s fourth centre, lies apart from the others some 250 m above sea level on the upper reaches of the Eisenbach (also called the Kesselbach), which empties into the Glan near Glanbrücken’s outlying centre of Niedereisenbach.The mountains either side of the narrow brook valley climb up to 400 m above sea level.Only a few hundred metres up from this centre runs the boundary with the Baumholder troop drilling ground.