Pilot, Frank Hailer, caused a stir on 19 March 1922, when he landed a plane with skids on the Schneeferner glacier. On 29 April 1927 Ernst Udet succeeded in taking off from the Schneeferner with a glider; he landed at Lermoos after a 25-minute flight. The glider had been disassembled into individual parts and transported up the Zugspitze by cable car. In the winter of 1931/32, a post office was set up on the Zugspitze by the German Imperial Post Office or Reichspost. It still exists today in the Sonnalpin restaurant and has the postal address: 82475 Zugspitze. In 1931, four years after the first glider flight, the first balloon took off from the Zugspitze