Bañado La Estrella
Formosa
Bañado La Estrella, located in Formosa Province in northern Argentina near Las Lomitas, is the country's second largest wetland, spanning approximately 4,000 square kilometers. It is seasonally flooded by rains and the overflow of the Pilcomayo River, resulting in a shallow, water-rich environment that supports abundant vegetation and diverse wildlife. The wetland lies within the semi-arid Chaco subregion and is crossed by the Tropic of Capricorn. The area hosts a variety of ecosystems, including low and high forests composed of species such as algarrobos, quebrachos, mistoles, and palo santo, with many trees partially submerged and covered by mosses and epiphytes called champales. Its fauna is notably diverse, including species like capybaras, caimans, various snakes, the maned wolf (aguará guazú), tapirs, jaguars, ocelots, and numerous bird species like jabirus and herons. The indigenous Pilagá community resides nearby in Bartolomé de las Casas. Declared a provincial natural reserve in 2005 and recognized as one of Argentina's seven natural wonders in 2019, Bañado La Estrella is significant for conservation, especially ornithologically, and features two main study sectors: northwest and southeast. The wetland's unique combination of seasonal flooding, rich flora and fauna, and cultural heritage make it a vital natural feature of the Gran Chaco region.
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Tip: The best time to visit Bañado La Estrella is during the dry season from May to September when access is easier and wildlife observation is optimal. Visitors are advised to purchase tickets or arrange guided tours in advance due to limited infrastructure. Discounts may be available for students and groups. Bringing insect repellent and waterproof boots is recommended given the wetland environment. Respect for local indigenous communities and natural habitats is essential.
Interesting facts
- •Bañado La Estrella is the second largest wetland in Argentina, covering approximately 4,000 square kilometers.
- •The wetland is crossed by the Tropic of Capricorn, marking a unique geographic feature.
- •It was declared a provincial natural reserve in 2005 and named one of Argentina's seven natural wonders in 2019.
- •The wetland supports a rich variety of fauna, including jaguars, ocelots, tapirs, maned wolves, and numerous bird species like the jabiru.
- •Many trees in the wetland become semi-submerged and covered with mosses and epiphytes, locally called champales.
History
Bañado La Estrella belongs to the semi-arid Chaco subregion and has historically been shaped by seasonal flooding from the Pilcomayo River.
The area spans between 200 and 300 kilometers in length and 10 to 20 kilometers in width, covering around 4,000 square kilometers.
The indigenous Pilagá community has inhabited the region for centuries.
In 2005, the wetland was officially declared a provincial natural reserve by law 1471, recognizing its ecological importance.
In 2019, it gained national recognition as one of Argentina's seven natural wonders, highlighting its conservation significance and natural beauty.
Place Guide
Northwest Sector
One of the two main study and conservation areas of Bañado La Estrella, characterized by diverse habitats supporting abundant birdlife and mammals.
Southeast Sector
The other principal division of the wetland, featuring extensive flooded plains and rich biodiversity, including reptiles and aquatic species.