The Mourning Forest (2007)
Original title: 殯の森
The Mourning Forest is a 2007 Japanese-language drama movie directed by Naomi Kawase, with a running time of 1h 38m. It stars Machiko Ono, Shigeki Uda and Makiko Watanabe.
A young woman working at a retirement home takes an elderly man living there on an excursion into the countryside, but the two wind up stranded in the titular forest.