Claim: The Kliff has been a nature preserve since 1923, which prevented the planned use of the sand deposits in construction of the Hindenburgdamm, but it is now threatened by erosion made worse by visitors or fossil hunters leaving the designated paths.
Evidence: The Kliff and the nearby heath-covered area (around 43 hectares) have been a nature preserve since 1923. This prevented the planned use of the sand deposits in construction of the Hindenburgdamm. Currently, the Kliff is threatened by erosion made worse by visitors or fossil hunters leaving the designated paths.