 The municipality stretches from the Ticino river at the "Biaschina-Schlucht" (elevation ) up to the Pizzo Campo Tencia () in the upper "Piumogna" valley.The core of the settlement, is made up of the sections of Grumo and Nivo, the latter is the only one in the valley bottom.Above the village center, situated on steeply sloping rock terraces are the settlements of Cala, Doro, Olina, and Osadigo Chiesso.