The Hintere Wühre, also known as the Forellenbach, was artificially created in the Middle Ages. The watercourse is two kilometers long and flows from the Höllbach to Görwihl. The Wuhren, as the small dams are called, played an important role in irrigating the meadows, which was a benefit to agriculture in the region.
This weir system is just one of only three remaining weir systems in the Hotzenwald region. The branch from the Höllbach stream, which supplies water, is located directly on the hiking trail, and the signal box is clearly visible.