The four mines at the northern end — the most beautiful area of the island — were closed down in 1975 by the Italian Environmental Protection Agency because the mining operation was destroying the wildlife and flora, which are Endangered species.
As catro minas que se atopan no extremo norte, a zona máis bela da illa, pecháronse en 1975 pola Axencia de Protección Ambiental italiana, debido a que extracción mineira destruía a fauna e a flora, que inclúen especies ameazadas.