He made two significant return trips to Peru in 1954 and 1956 .
He returned to Peru in 1952 to make the first ascent of another steep and difficult peak of the Peruvian Andes , Salcantay in the Vilcabamba mountain range .
He made two significant return trips to Peruvian in 1954 and 1956 .
He returned to Peru in 1952 to make the first ascent of another steep and difficult peak of the Peruvian Andes , Salcantay in the Vilcabamba mountain range .