Up to the beginning of the ice age, the present region of the Dolomites was covered by the enormous primordial ocean Tethys. Within this ocean formed a gigantic coral reef. When the sea levels dropped worldwide, bizarre rocks majestically towered high in the air. Peaks that were different to all other mountains all around. The present UNESCO World Heritage Site of the Dolomites was born. Go on the search of the geological past of the “most beautiful mountains in the world” and discover the impressive biodiversity and precious natural resources in the Puez-Geisler and Fanes-Sennes-Prags Nature Parks.