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
Mountains of Azerbaijan peaks of the mountain range. The highest peak of the Greater Caucasus is Mount Bazarduzu, which is situated 14,652 feet (4466 meters) above the sea level, is also the highest point in Azerbaijan. The mountains of the Greater Caucasus are located in the region of high degree of seismic activity. The mountains are formed by rocks that date back to Jurassic and Cretaceous periods. The Lesser Caucasus is the second important mountain range in Azerbaijan and forms its south-western borders. Mount Murovdag and Mount Zangezur are the main ridges of the Lesser Caucasus. They are formed by sedimentary and volcanogenic