<P> Built on the northeastern shore of the Great Salt Lake near Rozel Point in Utah entirely of mud , salt crystals , and basalt rocks , Spiral Jetty forms a 1,500 - foot - long ( 460 m ) , 15 - foot - wide ( 4.6 m ) counterclockwise coil jutting from the shore of the lake . </P>
where was the spiral jetty created before it disappeared due to erosion
the northeastern shore of the Great Salt Lake near Rozel Point in Utah