Stage 1: Rifugio Peller - Bivacco Costanzi

First stage of the "Dolomiti di Brenta Trek" route, from Rifugio Peller to Bivacco Costanzi. 
The path SAT 336 "Claudio Costanzi" connects Pian della Nana with Rifugio Graffer and is described as via Ferrata. The section actually fitted with cables and ladders is not included in the DBT Expert route and it goes from Passo di Pra Castron, below Cima Sasso Rosso, to Rifugio Graffer: here via ferrata equipment must be used and the path turns out to be difficult because of the wildness and the very few trekkers along the way. However, the section of the path SAT 336 followed by the DBT is a very normal path without any technicl difficulty.