Laguna del Desierto incident Laguna del Desierto region, the tribunal set the "hito 62" (cornerstone 62) at the O'Higgins/San Martin Lake and draw the boundary from there to mount Fitz Roy on the Martínez de Rozas Range awarding Chile the complete valley of Laguna del Desierto. In 1946 an aerial reconnaissance of the United States Air Force, ordered by the Chilean government, revealed that the lake emptied to the Atlantic shores. Chile and Argentina have to redraw its maps. The initially organized labour support for 1963 elected Argentine President Arturo Illia turned to antagonism during 1964, as secret plans for Juan Domingo Perón's return
Laguna del Maule (volcano) Cari Launa on the Chilean side in the northeastern sector of the field, and Laguna Fea in the south at elevation and Laguna Negra lake both on the Argentine side. The Laguna Sin Salida (so named because it lacks a river running out of it) is in the northeastern sector of the volcanic field and it formed within a glacial cirque. Laguna del Maule is geothermally active, featuring bubbling pools, fumaroles and hot springs. Temperatures in these systems range between . The field has been evaluated as a potential source of geothermal energy. It and the neighbouring Tatara-San Pedro volcano