The Buried Forest (2005)

Machi, a young high school student from a small mountain town, is having fun with her friends inventing the outline of a fantasy tale. They all add an episode to this exquisite invention whilst, in parallel, the adults pursue their daily life. But when, due to a storm, an intact thousand-year-old forest surfaces from the entrails of the earth, a new space opens up where reality and fantasy mingle and where everything becomes possible.