Trivia

To animate the climbing scenes realistically, director Patrick Imbert consulted with several mountaineers who had tackled Everest.

In the scene where Habu is with his friends at the bar, characters drawn in the likeness of Isao Takahata and Hayao Miyazaki can be seen in the background.

Fairly accurate depiction of mountaineering right down to the two ice axes on the photographers pack. One an adze and the other a hammer.

This is actually a distillation of five volumes of manga by Jirô Taniguchi and Baku Yumemakura.

Patrick Imbert was not familiar with the source material when he was first approached about making the film.