A memorable experience and a spectacle of nature they are considered a wonder of the world. These falls originated 200 thousands years ago in the place that today is known as “the 3 frontiers” marked with stone pillars, where the Iguazú river and the Paraná river meet.

A geological fault produced on the Paraná riverbed made the outlet of the Iguazú river become an abrupt cascade approximately 80 meters high.

From that point, where the falls originate to where the Devil’s Throat is located today, covers 23 kilometers. This is due to the slow process of erosion, however the steep drop which defines them as waterfalls remains.

This original cascade, has become the most impressive falls of the group, The Devil’s Throat. Eighty meters high, it is located on the principal river course. Depending on the water level, you can see anywhere between 160 a 260 falls, that on average flow at a rate of 1500 cubic meters of water per second.

The violence of the falls produce a permanent fog, where sunbeams form multiple rainbows of incredible beauty.

There are more than 270 falls in an area where cliffs and islets are scattered in a half moon.

From the visitors center you can walk around trails or in a picturesque train.
There are two basic circuits: an upper path and a lower path.
The lower path leads to the base of the falls, where the spray moistens visitors. It is a unique experience, worth daring the adventure. In this circuit you may also take a boat to Isla San Martín.

From the upper path you have panoramic views from the footbridge in an unforgettable experience.
The Iguassu river runs, at least in some sections, over a flow very resistant to the erosive action of the water. The layer beneath it, however, is appreciably more vulnerable to that action. With the passing time the water erodes the lower layer. With its support removed, the upper layer starts to crumble progressively.

Huge blocks can be observed at the foot of some falls – especially from the Argentinean side of the Falls – those are the remains of the upper defile. The previous description explains that the water screen serves as a shelter for birds and amphibians.

As the erosion process “backwards” continues, over future millenniums the falls will keep moving, as they have been moving since time immemorial.