evidence: Los Glaciares National Park is located in the Southwest of Santa Cruz Province in the Argentine part of Patagonia. Comprised of a National Park and a National Reserve it has a total surface area of 600,000 hectares. Los Glaciares owes its name to the numerous glaciers covering roughly half of the World Heritage property. Many of these glaciers are fed by the massive South Patagonian Ice Field, the most extensive South American relict of the glaciological processes of the Quaternary Period. In addition, there are impressive glaciers independent of the main ice field. The property therefore constitutes a massive freshwater reservoir. [...] The property has an impressively long formal conservation history going back to 1937. Los Glaciares National Park is a state-owned unit of the National System of Protected Areas in Argentina (Law No. 22.351 dealing with the National Park Administration), and it was created in 1937 when Law No. 13.895 was enacted, while National Law No. 19.292 of 1971 established the current limits, including the division of the area into a National Park and a National Reserve. Most of the territory of the Magallanes Peninsula, in which the Perito Moreno Glacier is located, is a Provincial Nature Reserve serving as a buffer zone of the property.