Cyril Ruoso / Chacraraju Mountain summit at 6112 meters, Cordillera Blanca Mountain Range, Andes, Peru

Cyril Ruoso / Glacial lake at the base of Pastoruri Glacier at 5200m, Cordillera Blanca Mountain Range, Andes, Peru

Cyril Ruoso / Ice cave in the Pastoruri Glacier at 5200 meters, Cordillera Blanca Mountain Range, Andes, Peru

Cyril Ruoso / Yanapaccha Glacier and Chopicalqui Mountain, Cordillera Blanca Mountain Range, Andes, Peru

Cyril Ruoso / Avalanche in Huandoy Mountains at 6356 meters, Cordillera Blanca Mountain Range, Andes, Peru

Cyril Ruoso / Huandoy Mountain in the Cordillera Blanca mountain range, Andes, Peru

Colin Monteath / Sunset on Yerupaja and Sarapo mountains from Sarapococha Lake, Cordillera Huayhuash, Andes, Peru

Colin Monteath / Yerupaja Chico, 6121 meters, from Cerro Yaucha, Cordillera Huayhuash, Andes, Peru

Colin Monteath / Chemicals leaking from old gold mine cause orange colored mud in swamp, Cashapampa Valley, Cordillera Huayhuash, Andes, Peru

Colin Monteath / Yerupaja summit ridge, 6617 meters, at sunset, Cordillera Huayhuash, Andes, Peru

Colin Monteath / Cacti near Cerro Cuyoc, Cordillera Huayhuash, Andes, Peru

Colin Monteath / Distichia (Distichia muscoides) cushion plant in dried out swamp area under Carnicero peak, Cordillera Huayhuash, Andes, Peru