Watch VoirFilms. Stones are at once the most foundational and the most overlooked parts of our lifeworld. When a retired nature documentary narrator passes a kidney stone, she decides to tell one more story about this forgotten world of stone . A hypnotic essay film asking urgent ecological questions, Apple Cider Vinegar takes the viewer on a journey meeting Palestinian quarry workers, passionate Britisch Geologist and People living on the lava fields of Fogo.