This reserve is home to an interesting area covered in Canary Island Cactus Spurge and Common Canary Spurge and significant remains of thermophile forests. The unusual orography of the ancient ravine formations is representative of the island geology which shapes a most beautiful landscape in Güigüi. The flora includes some endemic species that are in danger of extinction. The populations of these are distributed within the reserve. Some exclusive species include the knapweed (Cheirolophus falcisectus). The fauna includes various species of endangered birds which nest in the coastal cliffs. From a cultural point of view, the existence of archaeological sites in the vicinity of the Hogarzales mountain is worthy of mention.
Location: La Aldea de San Nicolás.
Surface area: 2920.9 hectares.