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Petroforms, also known as boulder outlines or boulder mosaics, are human-made shapes and patterns made by lining up large rocks on the open ground, often on quite level areas. Petroforms in North America were originally made by various Native American and First Nation tribes, who used various terms to describe them. Petroforms can also include a rock…
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petroforms large many made areas rock rocks manitoba also north boulders sites park along astronomical wisconsin area shapes patterns often
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Petroform | related to Astronomical markers | Some | 0.60 | section |
| Petroform | related to Astronomical markers | They | 0.60 | section |
| Petroform | related to Astronomical markers | Higher | 0.60 | section |
| Petroform | related to Astronomical markers | Petroforms | 0.60 | section |
| Petroform | related to Astronomical markers | The Sioux | 0.60 | section |
| Petroform | related to Astronomical markers | What | 0.60 | section |
| Petroform | related to Astronomical markers | Orion's | 0.60 | section |
| Petroform | related to Astronomical markers | Polaris | 0.60 | section |
| Petroform | related to Astronomical markers | Venus | 0.60 | section |
| Petroform | related to Astronomical markers | North America | 0.60 | section |
| Petroform | related to Astronomical markers | Manitoba | 0.60 | section |
| Petroform | related to Astronomical markers | Saskatchewan | 0.60 | section |
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