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Tagspipestone
3 places carry this tag, across every kind and continent it appears in.
🇺🇸 United States · Earthwork
Middle Woodland (Hopewell) · Hopewell (Ohio Hopewell)
Hopewell earthworks (200 BCE–400 CE) on Little Miami — 300-m Great Enclosure and pipestone pipes at Cincinnati.
🇺🇸 United States · Ancient city
Late Prehistoric Oneota (Blood Run phase 1500–1700 CE) · Oneota (ancestors Dakota-Ioway)
Largest Oneota town 1500–1700: 76 mounds and boulder enclosure, 6,000 residents on Big Sioux.
🇺🇸 United States · Rock art
Archaic to present (1000 BCE–present) · Sioux (Dakota/Lakota/Nakota), Oneota predecessors
2,000-year sacred catlinite quarries: 3000 pits in Sioux quartzite cliff plus thunderbird petroglyphs.