sentences:  The principal photography was shot entirely on location in Mexico, most notably at the Hacienda Ciénaga del Carmen (deep in the desert between Torreón and Saltillo, Coahuila) and on the Rio Nazas.Peckinpah's epic work was inspired by his hunger to return to films, the violence seen in Arthur Penn's "Bonnie and Clyde" (1967), America's growing frustration with the Vietnam War, and what he perceived to be the utter lack of reality seen in Westerns up to that time.He set out to make a film which portrayed not only the vicious violence of the period but also the crude men attempting to survive the era.