The Brenta river and it's natural passage way, as well as vital links with the Altopiano of Asiago created an optimal situation for the evolution of Valstagna's economy. The vallies : Valgadena, Valvecchia, Franzela and later, after '400 Calà di Sasso, were used to slide large trunks down from the highlands. Timber was then stockpiled in the 'stazi' , or stations along the Brenta Canal: Carpanè, Merloand Oliero, awaiting transport via rafts to Venice. The role and importance of Valstagna from the XIII century on gave rise to a merchant class and greatly improved the quality of life for the local community providing means to utilize local rersources that brought in external investments and privelages, especiallyfrom La Serenissima:Venezia.
The Calà di Sasso, a pathway using and the natural geography of the valley, was constructed by Asiago in 1398. This trail is made of 4,444 steps ( measuring half meter in width and up to 2 meters in length).Timber reached an area designated, 'La Fontanella', where it was loaded into ox driven carts and brought to the stations on the river. It's still possible to hike from the center of Valstagna to the highlands on this amazing trail.