The Ballad of Narayama is a movie by director Shohei Imamura. The movie won a Grand Prix at the Cannes Film Festival. Wiki says "The film is set in a small rural village in Japan in the 19th century. According to tradition, once a person reaches the age of 70 he or she must travel to a remote mountain to die of starvation, a practice known as ubasute. The story concerns Orin, who is 69 and of sound health, but notes that a neighbor had to drag his father to the mountain, so she resolves to avoid clinging to life beyond her term. She spends a year arranging all the affairs of her family and village: she severely punishes a family who are hoarding food, and helps her younger son lose his virginity. The film has some harsh scenes that show how brutal the conditions could be for the villagers. Interspersed between episodes in the film are brief vignettes of nature – birds, snakes, and other animals hunting, watching, singing, copulating or giving birth". Here is a video with English subs but I won't recommend it, it's too sad and the practice of ubasute has left its mark on Japanese folklore, where it forms the basis of many legends and poems.
The Ballad Of Narayama has been made into films twice before. This year there will be another one called "Dendera", but it's not just a sad story like the other two. In the new Narayama, the old women try to survive and create their own villege in the mountains and they take revenge on the villagers who exiled them. Here is a trailer and I was pretty impressed watching it, because so many famous actresses appear in this film, they play the elderly people who were abandoned on the mountain.