"The statement "Placed Upon the Horizon (Casting Shadows)" is a sculpture by American artist Lawrence Weiner. Since the 1960's, Weiner has made sculptures which can exist in three separate states: as conceptual proposals described in language; as objects made of materials somehow related to the place in which they are installed; and as objects accompanied by a statement describing them. The Vancouver Art Gallery's sculpture is made of cedar (a "material of the region") and is placed in a public space where it can be seen by many other people than those who visit art galleries." (From artwork description issued by the VAG)