The Train Robbers (1973) is a classic western starring John Wayne as a retired outlaw who is hired by a widow to help her recover a stolen cache of gold from a ruthless gang of train robbers. Along the way, he must face off against an old nemesis, a corrupt sheriff
From Wikipedia
The Train Robbers is a 1973 American Western film written and directed by Burt Kennedy and starring John Wayne, Ann-Margret, Rod Taylor, Ben Johnson, and Ricardo Montalbán. Filming took place in Sierra de Órganos National Park in the town of Sombrerete, Mexico. Two brief scenes take place in the square that was used for the final shootout in Butch Cassidy and the Sundance Kid.