The Campolino nature reserve together with the biogenetic nature reserves in Abetone and Pian degli Ontani form a single system of protected areas that extend from Abetone to Monte Caligi, above Cutigliano.
The Campolino reserve, which you can only visit if accompanied by the Corpo Forestale di Fontana Vaccaia after calling the number +39 057362121, protects one of the last remaining groupings of red firs in the Appenines: this tree is actually very widespread through the Alps, but very rare in the Appenines after its growth was redirected northward following glaciations and after many were cut down to obtain a particularly fine wood. The area also touches peak areas, with grasslands and heathlands full of flowers in springtime, including gentian and violets. In glacial cirques carved by ancient glaciers you can still find ponds and bogs filled with spagnum species typical of mountain marshland, like cotton grass, marigolds and white veratrum.
The Abetone reserve, which is freely accessible, protects beech (Fagus sylvatica) and silver fir tree (Abies alba) forests, with additional man-made groupings of Norway spruces (Picea excelsa); rounding out the flora of these forests are sycamores and Norway maples (Acer pseudoplatanus, Acer platanoides), golden chains (Laburnum anagyroides), mountain-ashes (Sorbus aucuparia) and other species.
The Pian degli Ontani reserve, which meets fewer quotas compared to the others, is known for its dense concentration of beech trees that were once better described as “copses” and are now better described as “high forest.” There are numerous towering trees in the area, among them are European silver firs (Abies alba) in the forest of Crocina in Abetone, sycamores (Acer pseudoplatanus) in the church square in Cutigliano, the chestnut tree (Castanea sativa) and the European beech tree (Fagus sylvatica) of Roncacce (fractions of Cutigliano, on the opposite side of the reserves).
An extensive trail network passes through the area, connecting the residential areas of the valley floor to the forest slopes and ridges.