Robert Smithson

Robert Smithson (January 2, 1938 – July 20, 1973) was an American artist known for sculpture and land art who often used drawing and photography in relation to the spatial arts. His work has been internationally exhibited in galleries and museums and is held in public collections. He was one of the founders of the land art movement whose best known work is the ''Spiral Jetty'' (1970). Provided by Wikipedia