In addition, some of the oldest geological materials on the island are found there, combined with an intense erosive activity of which the Roque del Conde or Pico de Abinque are faithful examples. The Barranco del Infierno (Hell's Ravine), protected as a Special Nature Reserve, and the phreatomagmatic crater of the Caldera del Rey also stand out. More than 45% of the surface of the municipality is made up of protected natural areas. In recent years, the coast of the municipality has experienced incredible development. Known as Costa Adeje, it concentrates a hotel infrastructure of excellent quality, as well as a wide range of leisure, nature, rest and sport activities (with a special mention to its golf course).