sentences:  The mountains either side of the valley reach more than 350 m above sea level (Reiterberg 364 m, Gründling 353 m).The municipal area measures 721 ha, of which roughly 20 ha is settled and 71 ha is wooded.Hefersweiler borders in the north on the municipality of Nußbach, in the east on the municipalities of Rathskirchen and Seelen, in the south on the municipality of Niederkirchen, in the southwest on the municipality of Relsberg and in the northwest on the municipality of Reipoltskirchen.