German shelter room 1914/1916?

France / Alsace / Oberhausbergen /

As far as one can conclude from the visible remainders, there was a German shelter room from the Kaiserreich on this spot. Was it an artillery-, infantery- or ammunition room? The room is not listed in Philippe Burtscher's "De la ceinture fortifiée du Strasbourg à la position de la Bruche". Who has information about this room?
Nearby cities:
Koordinaten:   48°37'40"N   7°41'14"E
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