Valli Cupe Canyon, unique in Italy for its geomorphological features, has inaccessible and rugged walls cut vertically with a profile often full of a myriad of small ravines dug by atmospheric agents. Moreover, it holds the exclusive kingdom of birds that nest here in large numbers. While from a geological point of view and in reference to the European area, it is to be considered a rather rare formation because it consists of an excavation in polygenic conglomerate in sandstone matrix.
The area of Valli Cupe Canyon is rich in plant species of rare beauty, such as the bulbiferous fern (Woodwardia radicans), a typical relic of sub-tropical flora dating back to the Tertiary or Cenozoic Era, now present only in very few environments of southern Italy. The diversity of fauna is equally rich and includes numerous birds of prey (kestrel, buzzard, kite), the raven, the owl (the common one and the royal one), as well as rare and very beautiful species such as the spectacled salamander. In the same way, it needs also to be underlined the presence of Italian frog and freshwater crab.
In some areas, only a few meters wide and more than a hundred deep, Valli Cupe Canyon is a marvel of nature and one of the most evocative sites of the entire Reserve since it appears as a natural corridor where with a faint glow so that it arouses intense emotions in visitors.