On the Argentine side of the Andes the rugged Cerro Catedral group of peaks offer great mountain hiking. The peaks are located in the Nahuel Huapi National Park only one hour from the town of Bariloche. This is one of the few areas of the Andes where you can do a hut to hut tour like you would in the Alps. The peaks are just over 1.2 miles high and the passes are up to 1.1 miles high. The longest circuit takes you from Lago Gutierrez past the Refugios Frey, Jakob, Segre to the Refugio Lopez. There is some scrambling on this route. Many other hut based walks are possible in this very accessible and therefore relatively popular area of the Andes. This area also has some very good rock-climbing.