The Refuge Sandro Pertini is along the hiking trail around the Sasso Lungo group, which impresses for its spectacular views. The snowy mountain side of the Marmolada, the vertiginous rock faces of the Sasso Lungo mountain and the enchanted "City of Stones" (Steinerne Stadt/Città dei sassi) are only some of this route's highlights. Trentino Alto Adige Italy Europe