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Photo: Hinrix, CC BY-SA 3.0 via Wikimedia Commons
Oldest house in town dating to 1541
© OpenStreetMap contributors
The backdrop for the festival and one of the main "sights" is a roughly 100 m high mountain not made of chalk (Kalk) but of anhydrous gypsum (calcium sulfate). Inside this mountain there is a cave that is a popular wintering place for bats and can be visited seasonally.