Christo's "The Mastaba, Project for the United Arab Emirates" is a mixed media work on paper that combines pencil, pastel, and photographic collage to visualize an ambitious large scale installation proposal. The work documents the artist's characteristic process of depicting unrealized environmental art projects through technical and imaginative renderings. The presentation in a Plexiglas box reflects Christo's meticulous approach to protecting and displaying his preparatory materials as finished artworks in their own right.