What tourists of Berchtesgaden usually don't get to see. A rare view of the U-Boot diesel engine and the emergency generator at the Eagle's Nest in action. We can enjoy this video thanks to German U-Boats Crews and Commanders.

The Kehlsteinhaus (known as the Eagle's Nest in English-speaking countries) is a Third Reich-era edifice erected atop the summit of the Kehlstein, a rocky outcrop that rises above the Obersalzberg near the town of Berchtesgaden. It was presented to Adolf Hitler on his 50th birthday as a retreat and place to entertain friends and visiting dignitaries. Today it is open seasonally as a restaurant, beer garden, and tourist site.

Kurdirektion staff member and chief engineer Herbert Eglauer and his team demonstrate a periodic test run of the antique submarine engine. The smaller machine with a belt is the air compressor, which keeps the airtanks under steady pressure. Air pressure is needed to start the huge diesel engine. The sturdy contruction still works perfecly after many decades. The diesel motor was built by MAN (Maschinenfabrik Augsburg-Nürnberg). The generator was built by Siemens Schukert.