At 22,615 feet (6,893 meters) high, Ojos del Salado is the highest volcano in the world and the second highest peak in the Western Hemisphere, straddling the border between Chile and Argentina. Climbing this impressive peak requires a high level of fitness and good acclimatization, as well as mountaineering skills for the final section to the summit. Climbers are rewarded with stunning views of the Atacama Desert and the surrounding Andean peaks. Guided expeditions can help with logistics and provide support during the climb.