Iguazu National Park (Argentina) – Location, Significance, Facts

Iguazu National Park is a protected national park in Argentina that conserves the Iguazú Falls and surrounding Atlantic Forest.

Iguazu National Park, Argentina.

Country: Argentina
Coordinates: 25.6834° S, 54.4548° W

Iguazu National Park overview

Iguazu National Park is a protected national park in Argentina that conserves the Iguazú Falls and surrounding Atlantic Forest. It is located on the Iguazú River near the Argentina–Brazil boundary at approximately 25°41′S, 54°26′W and holds formal recognition as a UNESCO World Heritage site. The park preserves a continuous block of subtropical forest and a complex system of waterfalls, making it a distinct conservation unit within Argentina's protected-area network.

Iguazu National Park coordinates

Iguazu National Park is commonly mapped at approximately 25.6834° S, 54.4548° W, or -25.6834, -54.4548 in decimal degrees.

Degrees: 25.6834° S, 54.4548° W

Decimal: -25.6834, -54.4548

Where Iguazu National Park is located

Iguazu National Park occupies a portion of northeastern Argentina within Misiones Province, adjacent to the city of Puerto Iguazú. The park sits on the western side of the Iguazú River and abuts Brazil’s Iguaçu National Park across the international boundary. The terrain lies on the Paraná Plateau, where the river descends over basalt flows to form a sequence of cataracts and islands. Surrounding features include continuous Atlantic Forest to the south and the broad Paraná River basin downstream.

Why Iguazu National Park is important

Iguazu National Park matters for its combined hydrological and forest systems: the park contains the multichannel Iguazú Falls complex, including the prominent horseshoe-shaped Garganta del Diablo (Devil’s Throat), and adjacent remnants of the Upper Paraná Atlantic Forest. These linked elements create habitat heterogeneity with steep basalt cliffs, riverine islands, and canopy forest, supporting species assemblies not present in nearby drylands. The park is also significant as a formal transboundary conservation node because it connects protected forest in Argentina with protected areas in Brazil, enabling regional ecological connectivity.

History of Iguazu National Park

The area enclosed by Iguazu National Park has a layered history that includes long-standing use and cultural association by Guarani-speaking peoples, whose language contributed the name commonly used for the falls. European records of the falls date from early exploration of the Río de la Plata basin, and national authorities later established legal protection to conserve the waterfalls and surrounding forest from conversion. Over the twentieth century the site became the focus of national-level stewardship, scientific inventories of flora and fauna, and cooperative conservation initiatives with neighboring Brazilian authorities to maintain the integrity of the falls and riverscapes.

Natural features of Iguazu National Park

Iguazu National Park’s core physical structure is a cascading system where the Iguazú River splits around islands and drops over a basalt escarpment, producing dozens of separate cataracts. Basaltic bedrock of the Paraná volcanic province underlies the falls and shows columnar jointing and steep cliff faces carved by river erosion. The largest concentrated drop forms a horseshoe-shaped chasm known locally as Garganta del Diablo, where converging channels create intense hydraulic plunge and spray. Islands and rocky outcrops within the river support patches of mature forest and distinct microhabitats.

Environment, protection, and monitoring of Iguazu National Park

Iguazu National Park is administered under Argentina’s national parks framework and is subject to statutory protection that restricts land-use conversion within its boundaries. Conservation priorities focus on maintaining Atlantic Forest remnants, conserving freshwater dynamics of the Iguazú River, and monitoring populations of forest-dependent and aquatic species. Long-term management combines park administration, scientific monitoring, and coordinated actions with Brazilian counterparts on cross-border issues such as watershed integrity, invasive species control, and habitat restoration to sustain ecological function.

Iguazu National Park facts

The park was created by the Argentine government to protect the Iguazú Falls and associated forest from agricultural and developmental pressures. The falls system within the park is formed where the Iguazú River drops over a basalt escarpment of the Paraná volcanic province. The name Iguazú comes from Guarani words meaning "big water," reflecting indigenous linguistic and cultural links to the place. The Devil’s Throat (Garganta del Diablo) is the park’s most prominent waterfall feature, a horseshoe-shaped chasm where multiple river channels converge. Iguazu National Park is inscribed on the UNESCO World Heritage List for its natural values.

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