A Comparison | A Freestanding Work is Also an Earthwork

After reading chapter nine in Mary Stewart's book titled, Launching the imagination | A Comprehensive Guide to Basic Design, I wondered which other degrees of dimensionality the, Spiral Jetty, made by Robert Smithson in Great Salt Lake Utah (shown in Figure 9.13) could possibly represent. The art by Smithson is described in the book as an earthwork because it ". . . is a large scale outdoor instillation" (Stewart 186). This artwork falls within this category because it, ". . . extends beyond the walls of a museum or gallery". I find that this description also identifies the Statue of Liberty. This statue takes up an abundance of space, so it is a large scale outdoor instillation and it also extends beyond the walls of a museum or gallery so it is technically an earthwork, but it can also be considered a freestanding work, because it is ". . . designed to be seen from all sides. . . [and the statue's positioning by raising the torch indicates motion which] bring[s] to life the inanimate [bronze]" (Stewart 184). So after this comparison, I wonder if some degrees of dimensionality may overlap for certain works.