PERCEPTIONS: grand illusions Posted on Monday, May 8, 2006 12:08AMFriday, December 8, 2017 by Sughra Raza Michael Heizer. Water Strider, of the Effigy Tumuli Sculptures. 1983-85. Buffalo Rock State Park, Ottawa, IL. Photographed in 1985 just after construction and seeding. Compacted earth, 685 x 80 x 14 ft.Read more on Reclamation Art here. And Michael Kimmelman on Michael Heizer here.