From Alleghe reach Piani di Pezzè with the cable-car and then take the new cable-car to Col dei Baldi. Go towards Malga Pioda and then change your direction and go towards Rifugio Coldai (2132mt). Follow the path n° 560, to Forcella Coldai, from which you can enjoy a nice view of the lake Coldai. Keep going at the foot of Torre Coldai and then reach Col Negro. From there go down until you meet the path starting in Alleghe, and then walk towards Col Rean (2281mt). From the refuge enter the Val Corpassa, heading the majestic Torre Trieste. Quickly you reach Capanna Trieste and then continue for 3,5km to Listolade, where you can catch the bus to go back to Alleghe. This is perhaps one of the best itineraries in the Dolomites, thanks to wonderful peaks sorrounding it during the whole walk. Moreover, you can't miss a visit to the frozen Coldai lake, a real jewel in the Dolomites' crown.