Casillas Ruiz, Ramón, Yurena Pérez Candelario, and Cristina Ferro Fernández. 2023. “El Hierro UNESCO Geopark: Geological Heritage, Geoconservation and Geoturism”. Geoconservation Research 6 (1). https://doi.org/10.30486/gcr.2023.1980922.1123.