Santo vs. Las Momias

Until about fifty years ago, the town of Guanajuato, Mexico, had a grave tax. If you didn't pay, your loved ones were dug up and displayed in a museum! The climate is very arid, so the disinterred were already mummies. In fact, the museum and the mummies are still there. But that's not the most bizarre part of this story.

Santo or "the Saint" is "one of the most famous and iconic of all Mexican luchadores" Over his life he produced numerous B-Horror/Action films for Mexican cinemas. In 1972 he may have made his greatest film ever. Co-starring Blue Demon and Mil Mascaras, the plot is fairly straight forward. The wrestlers stop in Guanajuato and all the mummies come alive to attack them. Obviously. (There is a motive. Something about one of the mummies avenging his defeat by Santo's grandfather… or something…)

The film proved to Santo's most successful, and the mummies even got their own series, starring in such films as Robbery Of The Mummies and Castle Of The Mummies.

Atlas Obscura has clips from the movie, in which the real mummies appear, but they do not perform in action sequences -they have real live stunt doubles for that. Link