Buitre negro y cigüeña negra en Cortelazor Nature · Cortelazor, Sierra de Huelva, Huelva Image of Cortelazor, not of the place itself. The mountainous surroundings of Cortelazor, with cork oak, holm oak and high-altitude chestnut forests, are home to remarkable fauna such as the black vulture and the black stork, a species rare on the peninsula. Photo: Xemenendura (CC BY-SA 4.0) What to see and do in Cortelazor