This spectacle of nature, regarded as one of the wonders of the world, originated about 200,000 years on the site now known as "Landmark of the Three Borders", the confluence of the Iguazú and Paraná river. A geological fault produced on the Paraná River channel made ​​the mouth of the Iguazú river become an abrupt cascade stay 80 meters high. From that point, where the falls originate to where today is the Garganta del Diablo, there are 23 miles away, due to slow erosion setback, but continued in the position of the Falls. This large waterfall original, has become two large arches winding of 2700 meters long. Being the most impressive jump of the whole, the Garganta del Diablo, 80 meters high, is located in the main river course. As the river flow has more or less can be admired from 160 to 260 falls, which on average would be about 1500 cubic meters of water per second.