Some of these pictures and descriptions may give away plot details that you might not want to know before watching the film.
This is a blaxploitation western directed by Gordon Parks Jr. (who directed Super Fly) with African-American anti-heroes in the racist old west of 1911 when horses were beginning to be replaced by automobiles. Thomasine and Bushrod are a pair of lovers and bank robbers, very much like Bonnie and Clyde. They give most of their money away to the poor, so they have become folk heroes. When they are captured in a small town store their old friend Jomo, a Jamaican outlaw, saves them and runs away with them to their hide-out.
U. S. Marshal Bogardie has been chasing them aggressively but they keep escaping the traps he sets for them. He and his men capture Jomo when he goes to town alone to plan their last bank robbery. They torture Jomo to find out where Thomasine and Bushrod are hiding out by tying him up and dangling him over a deep pit filled with rattlesnakes. He is terrified as the snakes strike up at him but he refuses to talk, so Bogardie cuts the rope sending Jomo down into the snake pit. We hear him screaming over and over as Bogardie walks away saying it doesn't matter that he didn't talk because Thomasine and Bushrod will be coming to find him. And they do.
The snakes appear to be Western-diamond-backed Rattlesnakes, but they were certainly filmed in a different location. We see a shadow of two legs hanging over them which is a nice effect but when Jomo drops into the pit there surely aren't any snakes in it. As always, we hear the constant sound of rattlesnakes rattling during the entire scene.