United States National Register of Historic Places |
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Petroforms of South Dakota TR
NRHP: 64000798
| Archeological Site 39HD22 |
| Archeological Site 39HU189 |
| Archeological Site 39HU201 |
| Archeological Site 39HU66 |
| Archeological Site 39JE10 |
| Archeological Site 39JE11 |
| Archeological Site 39TU5 |
Data from United States Park Service and Wikidata