Best known for his radical land art of the 1960s and early 1970s Robert Smithson 19381973 is now widely recognised as one of the most influential artists of the twentieth century. Presenting new research on the figure of the timecrystal in Smithsons practice this book features essays by Amelia Barikin and Chris McAuliffe and Stephen Melville alongside manuscripts by Smithson drawn from the Robert Smithson and Nancy Holt papers at the Archives of American Art Smithsonian Institution which are r