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 Términos primarily through the effect of ocean tides. On the surrounding barrier islands, beach ridges, and mangrove coastline there are several Late Postclassic Maya sites. The city of Ciudad del Carmen is located on Isla del Carmen, between the lagoon and the Bay of Campeche. Twenty-nine percent of the lagoon is covered with seagrass. The lagoon was designated as a federally protected area for flora and fauna in 1994 by the Mexican government because of the importance of the biological ecosystems provided by its estuaries. There have been 1,468 identified fauna species found within the protected area of Laguna de Términos;