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
Entiat Mountains the Entiat Range. The highest peaks of the southern portion are under . Significant peaks of the southern Entiat Range include Cougar Mountain, Tyee Mountain, Sugarloaf Peak, Chumstick Mountain, and Burch Mountain. The name comes from the Entiat tribe. A large number of place names, including many of the mountains, were given by Albert H. Sylvester. In July 2014, several wildfires, including the Mills Canyon Fire and the Kelly Mountain Fire, burned in the Entiat Mountains. Entiat Mountains The Entiat Mountains, or Entiat Range is a mountain range in the U.S. state of Washington. Located west of the Columbia River,