Sand or Peter and the Wolf -- Film Description:
"Sand or Peter and the Wolf is a loose interpretation of the fable Peter and the Wolf, in which a boy's fear of the dark, the woods, and the wolf, is confronted and resolved. The film shows the extraordinary graphic possibilities of one of nature's most ordinary substances, sand."
-- carolineleaf.com

Source:
"Caroline Leaf: Handcrafted Animation, Paintings & Drawings." http://www.carolineleaf.com/. [official site]