&hint1=I am a great public sculpture&
&hint2=I exist in Utah's Great Salt Lake&
&hint3=I am a famous example of "earthwork" or "environmental art"&
&hint4=My spiral form is very simple&
&choices=Niagara Falls;Serpent Mound;Spiral Jetty;Heelstone;The Lightning Field;Poverty Point, Louisiana&
&answer=Spiral Jetty&
&title=Spiral Jetty&
&search=Spiral Jetty&
&artist=Robert Smithson&
&medium=Black rock, salt crystal, and earth&
&date=1969-70&
&location=Great Salt Lake, Utah&
&dimensions=Diameter 160', length 1500', width 15'&