This tour, which mostly takes place on dirt roads, makes you discover the Monte Corno/Hornspitz nature park. The climbs are never impossibly steep; the roads and paths are well maintained; refreshments are available at Malga Monte Corno; and, last, but not least: the route takes you past two lakes ('Lago Bianco' and 'Lago Nero'). All these aspects make this tour a fulfilling experience from the point of view not only of tourism, but also of sport. The starting place is near the church of the village of Grauno. From there, climb for about 200 m on a paved road towards Fontana d’Ao and carry on along a fairly level dirt road that leads from Preda da l'Ao locality towards Capriana (this stretch of the route follows a section of the old main road up Valle di Cembra). After a while, the road becomes a nice, easily cyclable path that takes you to Pian dal Mas. There, it becomes wider and climbs gently to the village of Capriana. After a short asphalt stretch through the village in the direction of Anterivo/Altrei, the climb resumes along a nice, never too steep forest road that passes a quarry. Carry on until you reach a place where a fountain has been carved out of a tree trunk and from where you can see the village of Anterivo/Altrei. Turn left and head for Passo della Cisa (signposts). After a short stretch in Val Gausa, you reach the pass. Follow the signs for Malga Monte Corno, bearing left along a nice forest road until you reach the mountain dairy (refreshments are available there in the summer). After having gone through a fence, climb for about 200 m. At the top of the ascent, when the path becomes level, follow the signs for 'Lago Nero' (you can clearly see the lake from a spot near the road where there is a totem pole of the nature park). From Lago Nero, follow the signs for 'Lago Bianco', which has all but turned into a marsh. From Lago Bianco, carry on along the forest road. Approximately 700 metres after a wide hairpin bend, take the path towards Cauria/Gfrill. At a crossroads of several roads, follow the signs for Grauno and head for Pradi Larghi along a path. From Pradi Larghi, you descend Val San Martin on stretches of dirt road alternating with sections of paved road and finally arrive back at Grauno.