El último aliento

alejandro / Indian Bulllie

Juan

Traveler

Swimming pool Professor Vicente

Sophia

Woman in Miscelanea

Sebastian kid

Ketzalli's Mother

The production used three film formats, F23, F900 both formats of Sony CineAlta digital cinema and 35mm for shooting underwater and aerial shots.

During the creation of the screenplay, Octavio Maya was looking for a round pendant to give the idea of cyclic, a message that is present all along the story. As result of that research, one night Maya dreamed he was in the house of the famous Greek translator Cayetano Cantu, along with the Nobel prize writers Carlos Fuentes and Octavio Paz, who suggest him that the round piece would be like "the ring" of the movie "The Lord of the Rings."

The film faced all kind of difficult aspects in film production: helicopter aerial shots, under water shots, boat shots, bus shots, working with infant actors and non actors, jungle locations where happen several weather complications.