- Sebastián Álvaro
- 56 min
La montaña oculta is a documentary about alpinism that takes place in Gasherbrum I - Hidden Peak. It was directed by Sebastián Álvaro in 1998 and produced by RTVE. It is a part of the series Al filo de lo imposible. It features Iñaki Ochoa de Olza, Juan A. Tomás, José Callau García, Francisco Soria, Alfonso Juez, Benito Molina and others.