Seegrotte

Deep within the earth lies Seegrotte. It whispers tales of nature’s power and human endeavor. Seegrotte began as a gypsum mine in the mid-1800s near Hinterbrühl, Austria. In 1912, an unexpected explosion breached a water reservoir. This flooded the mine, creating Europe’s largest underground lake. This wasn’t the end for Seegrotte. It was reborn in 1932 as a show mine and tourist attraction. Visitors could explore the old mine workings and take boat trips across the newly formed lake. During World War II, Seegrotte took on a darker role. The Nazis seized it for a secret project codenamed “Languste” or “crayfish.” They pumped out the water and transformed the lower level into a factory. Here, slave laborers from a nearby Mauthausen concentration sub-camp toiled. They built fuselages for the Heinkel He 162 “Salamander,” one of Hitler’s “wonder weapons.” Seegrotte’s history continued after the war. The mine flooded again when the Nazis destroyed the water pumps while fleeing. It reopened to the public in 1949. It once again offers boat rides on the underground lake. The Seegrotte even made a Hollywood appearance. Scenes from the 1993 film “The Three Musketeers” were filmed there. Today, at Seegrotte you can experience the cool air of the mine, see remnants of its mining past, and learn about its wartime history. A visit to Seegrotte is a journey through time. It’s a testament to human resilience and the enduring power of nature.