 Down in the dale, the village site abuts the Pfeffelbach (brook), which here turns from its south-to-north direction of flow towards the east, forming a narrow gorge between the Burgberg and the Niederberg within Ruthweiler’s limits.Several small brooks (Löschbach, Bisterbach, Kurzer Bach) flow into the Pfeffelbach within Thallichtenberg.Thallichtenberg borders in the north on the town of Baumholder, in the northeast and east on the municipality of Körborn, in the southeast on the municipality of Ruthweiler, in the south on the municipality of Pfeffelbach, in the west on the municipality of Berschweiler bei Baumholder and in the northwest on the municipality of Mettweiler.