Buckin' the West (1924)

A beautiful archaeologist travels to her brother's ranch to look for Aztec treasure only to find that her brother has died of snakebite and three cowhands bought the ranch. An international criminal learns of her search and that her brother has left her a map showing where the treasure is. Cat Edwards, one of the ranch's new owners, prevents the crook from stealing the map. Undaunted, the thug eventually kidnaps the girl and Cat must find her, rescue her and recover the map.