The Lago di Pergusa, place of the mythological Rape of Proserpina, is mentioned in the works by Ovid, Cicero and John Milton. The surveyed flora actually numbers 358 species, including several orchids. 2.23% of these are local species, such as the Euphorbia ceratocarpa, the Thymus spinulosus, the Crocus longiflorus and the Dianthus rupicola. In the reserve there is a representative and varied fauna belonging to different classes: fishes, insects, crustaceans, reptiles and birds such as the Purple Swamphen.