After the Operation Hydra bombing of the Peenemünde Army Research Center, the supersonic wind tunnel was moved to Kochel and engine testing and calibration was moved to Lehesten. Near the end of World War II in Europe, Peenemünde scientists were evacuated to the Alpine Fortress () A research and test facility planned since early 1944 in the Austrian Alps (under the codename Salamander) were never implemented; the target areas would have been in the Tatra Mountains, the Arlberg range, and the area of the Ortler mountain. V-2 rocket documents and drawings were hidden in a mine at Dörnten (14 tons from Peenemünde) and buried at Bad Sachsa (260 lbs from Walter Dornberger's headquarters at Schwedt-an-der-Oder).