In the 1930s, national park planning in Germany became specific again. There were concrete plans for the national parks of the Lüneburg Heath, Bavarian - Bohemian Forest, High Tauern, Höllengebirge, Neusiedler See and Kurische Nehrung. The Second World War prevented these national park plans from being taken forward; nevertheless, in 1937, an Upper Harz Nature Reserve (Naturschutzgebietes Oberharz) was designated.