Alberto Posada

El gigante blanco is a documentary about alpinism that takes place in K2. It was directed by Sebastián Álvaro in 1989 and produced by RTVE. It is a part of the series Al filo de lo imposible. It features Koldo Tapia, Txema Cámara, Alberto Posada, Martín Zabaleta, Javier Alonso, Abdul Karim 'Mister Karim' and others.

In the valley of Chistau, in the depths of the Aragonese Pyrenees, the waters of the Fuenfría barely wet, in summer, the rock that collapses in 140 vertical meters on the deep canyon flanked by pines. The place is totally inaccessible in winter and it is not until 2004 when Iñaki Cabo, in its constant search for new challenges, discovers for the first time the imposing ice waterfall. In the winters of 2004 and 2005, all the routes are equipped, but the great challenge remains, the free climbing of the great tail of the waterfall. This is the most feared section, in continuous motion, it forms and falls a couple of times each season.