Entro en la MAYOR GEODA DEL MUNDO. ¿Cómo se formaron sus CRISTALES GIGANTES?

In this video, I explain how geodes are formed and visit the largest known geode: the Pulpí selenite geode in Almería. Note: If you thought the largest geode was the famous Naica Crystal Cave (Mexico), you were mistaken: this impressive underground structure is a cave, not a geode. Important: No photos or videos may be taken without permission during organized tours of this geode. The clips in this video were recorded with the permission of the guide. Useful links: ►NEW! Surprising answers to everyday questions: (https://amzn.to/3Mornz4). ►The universe in a cup of coffee (https://amzn.to/3MnznAb). ►The 4 forces that govern the universe (https://amzn.to/3MuY6Tu). ►The Sofa Science Blog (https://www.cienciadesofa.com) ►Science on the Sofa Instagram (  / cienciadesofa  ) Animations by Alejandro Ortiz Pellicer (@xalealealex on Instagram)