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 revisionist western version of the Lone Ranger story created for a radio show in 1933 and then popularized in movies and a television series from 1949 to 1957. Typically the masked man is the center of the story, but this one is centered around his Comanche companion, Tonto, as he tells the story to a young boy, and it's a raw version of the racist old west run by outlaws and corrupt corporations who control the law and the army and decimate the native Americans.
One of the things I enjoy most about movies is the set design, props, makeup, costuming, and visual effects that together create a believable world, and this movie does a good job with that world building. It was nominated for Academy Awards for makeup and visual effects. Some of the set design and costumes include a snake dancer with a snake, a stuffed snake, and a long rattlesnake rattle earring worn by the main bad guy Butch Cavendish (William Fichtner.)
After being left for dead, the Lone Ranger John Reid, (Armie Hammer) and Tonto (Johnny Depp) return to town to seek justice for the killing of Reid's brother and six other rangers. They get to town at night, passing the "Hell on Wheels" sideshow with a fire-breather and an exotic snake dancing woman with a live python around her neck and arms called "Eastern Charmer."
Later we see John Reid in a Comanche tent talking to the Indians who captured him and Tonto. He is sitting next to a stuffed rattlesnake with its mouth open and fangs exposed that startles him when he first sees it. Tonto wears a stuffed raven on his head and Reid has watched him pretend to feed the bird, so he pretends to feed the snake to prove to the Comanches that he's aware of their customs. When they see that, they all laugh. Then they bury him and Tonto up to their necks, leaving them for the scorpions and whatever else comes to eat them.