Lake St. Martin is located on the territory of the Argentine state of Santa Cruz. It is included in the list of the 10 largest lakes in the world and is the deepest in the South American continent. The lake is located on the border of Argentina and Chile. His part in Argentina, was named after a national hero in the struggle for the independence of Jose de San Martin. Its total area is about 1010 square meters. m., depth reaches 836 meters. In form it is uneven and has 8 arms. The lake flows into the river Mayer and several streams and one river flows - Pasqua. Just two flow into the lake, and the glacier O'Higgins Chico.

San Martin is surrounded by exceptionally beautiful landscapes of the pampas and the chain of snow-capped peaks. The local flora and fauna is rich and fascinating. There are more than a hundred species of animals and birds.

Lake St. Martin is known for its clear waters. The color of the water changes from blue to green. It inhabits a large number of trout. In this connection, on its shores fans of sport fishing competitions are often held.

Tourist attraction of the area is the small town of El Chalten. There is everything for a comfortable stay of tourists: campgrounds, souvenir shops, information center, tourist agencies. Tourists are offered excursions to different parts of San Martin: walk on the water, walking tours in the surrounding lakes for fans of eco-tourism, lovers of extreme tourism offers picturesque snow-capped peaks of the Andes.

A special attraction on the banks of Lake San Martin estate is Nahuel Huapi. Guests here are organized horseback tours of the estate.