The quiet village of El Soberbio lies in one of Missiones Province’s most striking areas, with some of the finest scenery in the whole region; at this border Brazil and Argentina sit like plumped-up cushions on either side of the curvaceous Río Uruguay. The village is the point of access for the Saltos de Moconá, an unusual but decidedly uncooperative set of waterfalls. One of Argentina’s strangest sights, the Saltos del Moconá are made up of nearly 3km of immensely powerful waterfalls which spill down the middle of the Río Uruguay, tumbling from a raised riverbed in Argentina into a 90m river canyon in Brazil.

The split-level waterfalls – the longest of their kind in the world – are formed by the meeting of the Uruguay and Pepirí-Guazú rivers just upstream of a dramatic gorge. As the waters encounter this geological quirk, they “split” once again, with one branch flowing downstream along the western side of the gorge and the other plunging down into it. This phenomenon is visible only under certain conditions: if water levels are low, all the water is diverted into the gorge, while if water levels are high the river evens itself out. At a critical point in between, however, the Saltos magically emerge, as water from the higher level cascades down into the gorge running alongside, creating a curtain of rushing water between three and thirteen metres high. The incredible force of the water as it hurtles over the edge of the gorge before continuing downstream explains its Guaraní name – moconá means “he who swallows everything”.