Ente, Architectural heritage monument and workshop near Loisach River, Germany
Ente is an architectural heritage monument and former production site in Eschenlohe, Bavaria, built into the rock of a mountain. The complex consists of underground tunnels, hangars, and chambers spread across several levels carved directly into the stone.
The facility was built in the early 1940s to protect aircraft component production from air raids by moving it underground into the mountain. It was part of a broader German effort to relocate war-critical industry into rock cavities across the country.
The name "Ente" (duck in German) was a code name used to keep the true purpose of the facility hidden from outsiders. Today, the site draws visitors who want to see how wartime production was folded into the natural rock of a Bavarian mountain.
The site is not open for free visits and can only be seen on organized tours run by local authorities. It is worth contacting them in advance, as tours have limited availability.
The builders made use of natural cracks already present in the rock, deliberately widening them rather than excavating the mountain from scratch. This meant that from the outside, the mountain looked almost untouched even after the facility was complete.
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