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
Ramshead Range Ramshead Range The Ramshead Range, a mountain range that is part of the Snowy Mountains, is located in the Monaro region of New South Wales and the Alpine region of Victoria, Australia. The range extends from the southwest near Mount Cobberas No. 1 in Victoria, across the Black-Allen Line that defines the straight line border between the two states, towards the northeast near Thredbo in New South Wales. The peaks of the range are around , with Mount Twynam, at an elevation of , the highest peak. The number of peaks in the Ramshead Range is debatable: however it is