Meister, Conny, Iris Bohnacker, and Guido Bataille. “Hohle Fels – A UNESCO Global Geopark Geosite Within a UNESCO World Heritage Site: Protection and Cooperation”. Geoconservation Research 4, no. 2 (October 26, 2021). Accessed June 1, 2026. https://oiccpress.com/gcr/article/view/2808.