[4] Lembach lies in the Sauer valley, surrounded by the woods and sandstone cliffs of the Palatinate Forest-North Vosges Biosphere Reserve.

It is located on Departmental Road 3 which runs from Wissembourg, 12 km to the east of Lembach, to the north-western tip of Bas-Rhin and the onward route to Bitche in the department of Moselle.

The commune, which covers an extensive land area, much of it uninhabitable owing to the topography, also includes the small village of Mattstall and the hamlet of Pfaffenbronn.

The spectacular scenery and the fortifications of past centuries, coupled with the limited possibilities for agriculture in the immediate area, make tourism a key source of employment.

Clearly marked footpaths, some of them leading to ruined fortifications or to picturesque rock faces, are promoted as another tourist attraction.