I think it was Japanese or definitely east Asian film, takes place in a coastal village, maybe an island. The plot is kinda slow and I think it focuses on the experience of a young boy. The title I think has something to do with a local legend about a whistling type noise that occurs in the rocks at the beach and that it is coming from a skull, maybe the remains of a WWII soldier? That’s about all I can remember. I don’t know if I even particularly liked the movie, just bugs me I can’t seem to find it again.

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