Preface / Survey / Works -- Integration -- Isamu Noguchi Sculpture to Be Seen from Mars (unrealized). 1947 -- Walter De Mapia Las Vagas Piece. 1969 -- Walter De Maria Desert Cross (destroyed). 1969 -- Dennis Oppenheim Negative Board. 1968 -- Dennis Oppenheim Accumulation Cut. 1969 -- Dennis Oppenheim Time Line. 1968 -- Dennis Oppenheim Cancelled Crop. 1969 -- Jan Dibbets A Trace in the Woods in the Form of an Angle of 30[degree] Crossing a Path. 1969 -- Michael Heizer Rift (deteriorated). 1968 -- Michael Heizer Isolated Mass. Circumflex. 1968 -- Michael Heizer Double Negative. 1969-70 -- Robert Smithson Spiral Jetty. 1970 -- Robert Smithson Spiral Hill. 1971 -- Robert Smithson Sunken Island. 1971 -- Robert Smithson Amarillo Ramp. 1973 -- Richard Fleischner Sod Maze. 1974 -- Herbert Bayer Mill Creek Canyon Earthworks. 1979-82 -- James Turrell Roden Craler. 1977-present -- Andy Goldsworthy Ice Piece. 1987 -- Andy Goldsworthy Torn Hole. 1986 -- Doris Bloom and William Kentridge. Gate. 1995 -- Doris Bloom and William Kentridge. Heart. 1995 -- Interruption -- Christo and Jeanne-Claude Running Fence. 1972-76 -- Hans Haacke Skyline. 1967 -- Carl Andre Secant. 1977 -- Cart Andre Log Piece (destroyed). 1968 -- Dennis Oppenheim Gallery Transplant. 1969 -- Dennis Oppenheim Salt Flat. 1968 -- Dennis Oppenheim Whirlpool. Eye of the Storm. 1973 -- Dennis Oppenheim Star Skid. 1977 -- Dennis Oppenheim Relocated Burial Ground. 1978 -- Richard Long Stone Circle. 1976 -- Christo and Jeanne-Claude Wrapped Coast. 1969.