At the place of a much smaller forerunner, the Hofmannsweiher was created in its current size (16 ha) through construction work around the year 1668. Since the Dreifelder Weiher, which …
The Rosenheimer Lay is an abandoned quarry, which was formerly also called Kotzenrother Lay, in which basalt was mined until 1976 and is now a wet biotope.