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 Laja National Park are found in the park. Among them are: ciprés de la cordillera, araucaria, "maitén del Chubut" and "radal enano". Several activities can be performed within the boundaries of the park and in the surrounding area including climbing, trekking, skiing and fishing. Laguna del Laja National Park Laguna del Laja National Park () is a national park of Chile located in the Andes, between 37°22’ and 37°28’ south latitude and 71°16’ and 71°26’ west longitude. The park features spectacular mountain landscapes, whose main attractions are the Antuco Volcano, Sierra Velluda and Laguna del Laja (Laja Lake). The latter gives the name