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 western ghost story written and directed by Sam Shepard that seems to be known mostly as the last film to be released that River Phoenix acted in before he died. As two men are riding horses across the plains we see a rattlesnake coiled and hear it rattling for a few seconds to remind us that this is a dangerous place. Later, a young Native American woman riding a horse hears rattling and turns around to see a sidewinder. (The film takes place in Llano Estacado, which is in Texas and New Mexico where there are no sidewinders.) A few minutes later we see her roasting something long and thin over a fire that is attached to a long stick that is probably supposed to be a snake and then eating it. I don't know what else it could be. We didn't see her kill it, but it was probably supposed to be the sidewinder.