Moving away to the west and almost on the border with Chile found the Laguna Diamante. It is located within the Provincial Reserve of the same name, and is a mirror of water surrounded by volcanic debris in the Cordillera de los Andes. It has a maximum depth of 70 meters and 35 meters on its banks.
Lagoon born Diamante River, which runs along the City of San Rafael. The climate of the area is mostly very cold, but you can make fishing, the waters of the lagoon offer trout and mackerel. The lagoon does not allow navigation with motorboats, but is suitable for windsurfing, sailing, kayaking and canoeing. As for land sports, you can do rock climbing or trekking in the surrounding mountains, and is also a good place to mountain bike.
Next to the lagoon is the Cosmic Ray Observatory of the National University of Cuyo. Trips are from December to March, either by car from the city of San Rafael or horse, which requires several days. The area is ideal for bird watching, especially condors and guanacos.
Near the lagoon is the Maipo Volcano, over 5,000 meters. In its vicinity are the magnificent hills and Maipo Volcano 5,323 meters and the base at 2500 meters west of the lagoon. To get to Laguna del Diamante from San Rafael, just take the National Road No. 143, and then the junction with Provincial Route No 150.