Ojos del Salado was even higher than Ojos del Salado. Later measurements using more precise equipment showed that Ojos del Salado is about higher than Pissis. Furthermore, in 2007 a Chilean–Argentine–European expedition organized by Andes Magazine and Azimut 360 performed a survey on both Ojos del Salado and Monte Pissis using more accurate instruments. It found the former to be and the latter Although this fits within recent handheld GPS surveys, which have estimated the mountain to be between and , the vertical error margin of the expedition's equipment, , leaves uncertainty as to the mountain's more precise altitude. Ojos del Salado has
Ed Darack and maps. Ascents include those of Aconcagua, the highest mountain in South America, Argentina, the Western Hemisphere, and the Southern Hemisphere (and one of the Seven Summits), Ojos del Salado, the world's highest volcano and highest mountain in Chile, Nevado Sajama, the highest mountain in Bolivia, and also Monte Pissis and Llullaillaco. Published by AlpenBooks on November 1, 2001, "Wild Winds" was cited by "The New York Times" on the subject of the "Death Zone." Wind - Water - Sun: A Solo Kayak Journey Along Baja California's Desert Coastline, an adventure travel narrative published by Poudre Canyon Press in December