Quality and importance: there are some noteworthy rare flower species, it is furthermore a mountain pass of international importance due to the passage of many long and medium distance migratory species in late summer and autumn (post-reproduction migration).
Vulnerability: lacking due to the difficulty to reach the most valuable environments represented by the rocks.
Types of priority habitats of community interest (Annex I of the Habitats directive):
6110 - Rupicolous calcareous or basophilic grasslands of the
Alysso-Sedion albi.
6230 - Species-rich Nardus grasslands, on siliceous
substrates in mountain areas (and submountain areas, in Continental Europe)
8240 - Limestone pavements
Bird species subjected to special conservation measures (Annex I of the Birds directive): golden eagle, Rock partridge, European honey buzzard, Black kite