There is an information board about Gerach on the hip
The name Gerach originated from the term “Ghenrech”, also known as “Gerich” in the vernacular. The first documentary mention dates from 1438. The place experienced its real boom in the years around 1500 when about 200m away from the place, copper-bearing rock was found The rock finds must have been very productive, because this is the only way to explain the fact that a large underground mine was created. The underground tunnels are about 3 km in length, they reach just before the community of Hintertiefenbach Ceased in 1605 when a major mining accident occurred and the finds were no longer productive enough. The residents always had a difficult livelihood in the barren agriculture, early ore mining and later in the quarry. Many citizens also worked as agate grinders the historical Geracher Wasserschleife (built 1846/47) one last testimony. The single loop with four stones w Was operated until 1956 and restored in the 1970s. Source: Text information board