Val Vogna is a side valley branching south from Riva Valdobbia, about 8 kilometres south of Alagna, and one of the most beautiful and least-visited parts of the Valsesia landscape. The valley is narrow and steep-sided, with a torrent running through its base and a series of Walser hamlets and abandoned high pastures (alpe) rising up the flanks. The architecture of the surviving hamlets — stone and timber Walser farmhouses in various states of repair — is remarkably intact.
The walking in Val Vogna is excellent. The main trail through the valley leads up past a series of chapels — there are fifteen oratory chapels along the route, built by the Walser settlers over the centuries — to the high pastures and eventually to the Colle di Valdobbia, one of the traditional crossings into Switzerland. The round trip to the upper chapels takes half a day; reaching the col requires a full day and some scrambling experience.