Barquero (1970)

Director:	Gordon Douglas
Actors:	Lee Van Cleef, Warren Oates, Forrest Tucker, Kerwin Mathews, Mariette Hartley, Marie Gomez, Armando Silvestre

A ruthless gang of thuggish outlaws butcher the settlers of a small Colorado town, taking with them any spoils they can lay their hands on. Leaving a bloody trail of death behind them, they head for the Mexican border. Their only obstacles are a notoriously lethal river and a mysterious, hard as nails shotgun wielding boat owner called Travis Barquero, and he ain't going nowhere.