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 de Las Marites Natural Monument Laguna de Las Marites Natural Monument The Laguna de las Marites Natural Monument () Also Las Marites Lagoon Natural Monument Is a protected area with natural monument status located on the southeast coast of the coastal plain of Margarita Island in Nueva Esparta state in the northwest of the South American country of Venezuela. It was declared a monument on February 27, 1974. It has an extension of 3674 ha, an altitude of 40 msnm and an average temperature of 26 ° C, with hypersaline waters. Its vegetation is composed of large numbers of black and red lagoons and mangroves.