This beautiful region is located on Lake Constance. The name comes from the fact that it includes the area where Linzer H flows into Lake Constance. It covers an area of 55 hectares and includes a unique estuary area with a shallow water area, reed areas and forest as well as lakes; Because of this interaction between nature, there are sometimes rare and endangered animal species such as fish, insects, waterfowl, reptiles and amphibians. The flora also contains rare plant species such as swamp iris, white willow, and common snowball.