Some of these pictures and descriptions may give away plot details that you might not want to know before watching the film.
This is rightly regared as one of the worst movies ever made, but the MST3K version, which you can watch on YouTube, improves it considerably. The only thing memorable about it is the ending which is unusual and unexpected. Basically, a man and woman and their daughter get lost and drive up a dead end road in the desert where they end up at a house they think is a lodge but actually houses a cult with Torgo, a deformed servant, The Master, who wears a black robe decorated with huge red hands, and The Master's wives, who seem to like to practice full-contact wrestling in their nightgowns.
The snake scene is utterly unnecessary and adds nothing to the film. I vote that we make it mandatory for every movie to include a scene just like it. The family escapes from the house a short distance into the desert where they become exhausted and stop to rest. Using typical horror movie logic, they decide to go back to the house because nobody would think to look for them there. We see the three of them sitting on the ground, then from out of nowhere comes an extreme close-up of a coiled rattlesnake. Then we see the man aim his gun and shoot at the snake. Then we see another extreme close-up of the coiled snake, and then it quickly crawls away. Then we see the family again. There is no indication that the snake was shot, how close it was to them, or if it posed any kind of threat to them, but according to the law of the movies, every snake is dangerous and must be killed, or at least shot as since this one seems to have gotten away. According to the IMDB trivia section, the footage of the snake was taken from a Disney nature documentary, which explains why it is sitting on purple carpet.