Spottily effective mood piece from Australia (1975), based on an actual incident in which several schoolgirls disappeared during a day trip to a backcountry mountain. Director Peter Weir struggles to create an atmosphere of mystical languor, dissolving his actors in blinding sunlight and filling his sound track with the faintly ominous rustles of nature. But the deenergized drama leads only to anticlimax, as Weir suggests much more than he shows and invites the audience to fill in the meanings.