Lanín National Park, Protected natural area in Neuquén Province, Argentina.
Lanín National Park is a protected area in Neuquén Province covering about 412,000 hectares of Andean-Patagonian forest with lakes, valleys, and the Lanín volcano rising to 3,776 meters. The landscape combines steep peaks, dense woodlands, and clear water bodies that shape the park's varied terrain.
Decree 105,433 of 11 May 1937, signed by President Agustín Pedro Justo, made Lanín a national reserve within the Neuquén National Territory, with limits set in article 2 and an area of 412,000 hectares. Decree-law 9504 of 28 April 1945 under Edelmiro Julián Farrell turned the reserve into a national park; because it came from a de facto government, law 13,895 of 30 September 1949 ratified it.
Mapuche communities maintain ancestral ties to these lands, practicing traditional activities like livestock herding and gathering in the Araucaria forests that dot the park. Their presence shapes the identity of the place and connects people to the landscape in ways that go back many generations.
Access to the park is available through multiple entry points, with San Martín de los Andes serving as a main gateway. Permits are required before undertaking activities like hiking, camping, fishing, or climbing.
Part of the park's land is privately held: seven Mapuche communities occupy 24,000 hectares, alongside twelve private estates and eight private subdivisions of 1,871 lots. Around 4,000 hectares belong to the Argentine Army. The Lanín reserve was created in 1937 with 412,000 hectares.
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