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
Ojos del Salado two summits, one in Argentina and the other in Chile (the border between the two countries runs between the two summits). The difference in elevation of the two summits is less than Ojos del Salado has been a popular mountain for attempts to attain the highest altitude aboard a land vehicle. The current record altitude for a four-wheeled vehicle was set on 21 April 2007 by the Chilean duo of Gonzalo Bravo G. and Eduardo Canales Moya. Reaching an altitude of 6,688 meters (21,942 ft.) with a modified Suzuki Samurai, the duo beat the previous record of 6,646 m which