Breaking Ground: Broken Circle/Spiral Hill, 1971-2011
| MPAA Rating: | NR |
| Genre: | Short |
| Country: | Netherlands, United States |
| Directed By: | Nancy Holt |
| Written By: | Robert Smithson |
| Cast: | Robert Smithson |
| In Theaters: | Oct 08, 2011 |
| Runtime: | 21 minutes |
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