Geology of Chile the Taitao Peninsula, the Peru–Chile Trench subduction zone is the boundary between the South American and Nazca Plates. At Taitao, the Chile Triple Junction and the Nazca Plate subduct the South American Plate. In Norte Grande the mountains form a series of plateaus, such as Puna de Atacama and the Altiplano. At a south latitude of 27 degrees, Chile's highest mountain (Ojos del Salado) reaches a height of . Below 42 degrees south, the Andes split into a fjord landscape and the highest mountain is Monte San Lorenzo at . As the mountains ebb, the snow line lowers; in the
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