Forau and Waterfall DÁiguallut (2020m).

Poset-Maladeta Natural Park.
Under the glacier the Aneto we will find a very special natural phenomenon. Here in Aiguallut Foaru, water from the melt of the glacier of the Aneto is filtered by a natural sink and is driven underground to the Atlantic, instead of addressing (as would correspond ) to the Mediterranean. The walls of the cave that had collapsed is this spot have left a gaping hole in the place where the waters from the Ésera disappear mocking the most logical orographic division, the Atlantic Road(this is known by the name of karst phenomenon). A little above the Forau we find the Aiguallut waterfall, the view of the waterfall with Aneto at the background is really impressive.