The spiral jetty is a piece of landscape art designed and constructed in April 1970 by the American artist Robert Smithson. A 32 minute film of the same name also accompanied the construction. The jetty is located on the northeastern shore of the Great Salt Lake, near Rozel Point on the Promontory Peninsula. It forms a 1,500 foot long, and 15 foot wide jetty, built only out of salt, ud, and basaltic rocks found nearby, extending out onto the lake bed and coiling counter-clockwise. During times of high water the jetty stands slightly above the waterline, with the North arm’s hyper saline water often glowing a deep red, while periods of low water has the structure standing above dry Lake bed. Smithson was killed in an aircraft crash, and in 1999 the work was donated by his widow Nancy Holt (herself an acclaimed landscape artist, perhaps most famous for “Sun Tunnels”) to the Dia Art Foundation, who manages it today. Despite the remoteness of the site, it is a popular destination for art enthusiasts and other visitors.