Bañado La Estrella

Bañado La Estrella is a vast seasonal wetland in Formosa — the Argentine Chaco's largest — that fills when the Pilcomayo overflows and drains back toward dryness as the year turns, a landscape completely different at the same coordinates in July and October. Jabiru storks stand two metres tall in the shallows, caimans float like logs until something moves them, and pale drowned trunks rise from the water in an image that evokes the Pantanal and is known to almost no one.

The bañado forms where the Pilcomayo loses itself in the flat Chaco before ever reaching the Paraguay, spreading into a shallow seasonal lake that supports one of the continent's great bird gatherings — over 350 recorded species, from roseate spoonbills to comb ducks, in an internationally recognised Important Bird Area. Caimans, capybaras, marsh deer and maned wolves work the edges, and the flooding itself is the habitat's bodyguard, keeping the agriculture that has degraded the wider Chaco at bay. The visit belongs to local knowledge: guides from Las Lomitas, 4WD on tracks that flood seasonally, boats for parts of the circuit in the wet, and the photographic safari taken at the wetland's own pace. Formosa carries less tourist infrastructure than any Argentine province — which is precisely the condition that keeps the bañado what it is.