It leaves and naturally arrives in the valley's small town on the right bank of the Tagliamento River, small but not devoid of cultural interest. The 'Preone 200 million years' museum, which houses fossil finds of great interest such as Megalancosaurus preonensis or the pterosaur Preondactyulus buffarini, is one of them, and the 'Stavoli Lunas' nature trail rounds it all off. But this route is particularly characterised by nature; of the four routes, it is the one with the most dirt road to negotiate (forest road) (for those who are not prepared, there is always the state road - downhill from Sella Chiaunzutan), but it is also the one with the beautiful Arzino Waterfalls and the splendid Chiampon Valley to repay the effort of the climbs. (it is the one with the most ascent)
Length: 39 km; difference in altitude 901 m
