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Follow advice of quarry company employees. There is a board at the parking explaining the do's and don'ts. Please read carefully. Misbehavior of some climbers in the past led to conflicts with the owner of the quarry and could lead to restrictions or close down.
Find details here (german only): https://ig-klettern-halle.de/klettergebiete/regeln-der-klettergebiete
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