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211 places in the atlas, 24 of them inscribed as UNESCO World Heritage.
🇺🇸 United States · Earthwork
Mississippian (Thruston phase 1000–1370 CE) · Mississippian (Middle Cumberland – Thruston)
Mississippian mound-and-village on Mansker Creek near Nashville: platform mound 6 m high (50×35 m) rebuilt four times, truncating earlier Woodland component; village 4 ha with 300+ stone-box graves,…
🇺🇸 United States · Earthwork
Late Woodland – early Mississippian, Plum Bayou 650–1050 CE · Plum Bayou (aboriginal ancestors of Quapaw? Coles Creek related, not Caddo Mississippian)
Best-preserved Plum Bayou-culture platform-mound center (650–1050 CE) – 18 mounds (two tallest 15 m and 12 m) arranged geometrically around rectangular plazas and an earthwork embankment with…
🇺🇸 United States · Earthwork
Middle Woodland (Hopewell) · Hopewell (Ohio Scioto)
Hopewell circular enclosure (100 BCE–400 CE) near Bourneville — 120-m ring and 5-m log-tomb mound at Chillicothe.
🇺🇸 United States · Earthwork
Late Woodland to Mississippian (Coles Creek – Lake George phase 700–1500 CE) · Plaquemine / Mississippian (Lake George)
Yazoo Basin Mississippian–Plaquemine center (700–1500 CE, peak 1300–1500): 25 mounds over 40 ha including 8-m-high concial-temple Mound C (55×40 m), flat-top Mound A 12 m high (80×60 m) second…
🇺🇸 United States · Earthwork
Mississippian (Shiloh phase, 1000–1350 CE) · Mississippian (Western Tennessee)
Fortified Mississippian town (1000–1350 CE) with 7 mounds and 2 km palisade on Tennessee River bluff, Shiloh.
🇺🇸 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 · Earthwork
Middle Woodland (Deptford–Weeden Island, 200 BCE–750 CE) · Deptford–Weeden Island (Florida Woodland)
Woodland plaza center (200 BCE–750 CE) with 6 mounds and Hopewell exotics on Crystal River estuary, Florida.
🇺🇸 United States · Earthwork
Mississippian Pisgah & Qualla phases (1000–1450 CE) · Mississippian (Pisgah, later Cherokee precursor)
Three-mound Mississippian Pisgah phase (1000–1450 CE) center at Garden Creek confluence with Pigeon River, southern Appalachians: Mound 1—platform 35×25 m base, 3.5 m high with two-stage summit…
🇺🇸 United States · Earthwork
Mississippian Middle Cumberland (1000–1350 CE) · Mississippian (Mound Bottom phase)
Major Mississippian town (1000–1350 CE) on Harpeth River meander: 14 platform and burial mounds including 13-m-high Monks-Mound-scale Mound A (90×70 m base) within 10 ha palisaded plaza, plus Pack…
🇺🇸 United States · Earthwork
Middle Woodland Hopewell (c.100 BCE–250 CE) with Fort Ancient reuse · Hopewell → Fort Ancient
Outer-embankment timber circle 60 m diameter discovered 2007 by magnetometry inside Fort Ancient Hilltop Enclosure (Hopewell 100 BCE–500 CE, later Fort Ancient reuse).
🇺🇸 United States · Earthwork
Middle–Late Archaic (3500–2800 BCE) · Middle Archaic Watson Brake culture
Oldest North American mound complex: 11 mounds 5400 BP enclosing oval plaza, hunter-gatherer monument without agriculture.
🇺🇸 United States · Archaeological wonder
Classic Hohokam 1150–1450 CE (Sedentary to Classic transition) · Hohokam (Ancestral Sonoran Desert, ancestors of O’odham)
Ancestral Sonoran Desert four-story Great House (18 m × 13 m, 4 storeys, 11 rooms, caliche clay walls 1 m thick, internal loopholes) – largest known Hohokam structure, preserved under 1932 modern…
🇺🇸 United States · Earthwork
Plaquemine to Historic Natchez (1200–1730 CE) · Plaquemine / Natchez (Muskogean)
Natchez historic capital (1200–1730 CE) — 3 Plaquemine mounds and plaza where French witnessed 1725 sacrifice.
🇺🇸 United States · Earthwork
Mississippian 900–1200 CE (peak 1050–1200) · Mississippian (Cahokia)
Largest earthen structure in the Americas north of Mexico and centerpiece of Cahokia Mounds State Historic Site.
🇺🇸 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 · Ancient city
Woodland Glades 450 BCE–1700 CE · Belle Glade (Calusa/Glades)
Glades woodland pond-mortuary and 1200 m causeway with charnel house, wood effigies in submerged pond.
🇺🇸 United States · Earthwork
Middle Woodland Hopewell 100 BCE–500 CE · Hopewell tradition
Hopewell 22 ha circle-square with 321 m Great Circle, UNESCO 2023 unit-of-measure type-site.
🇺🇸 United States · Earthwork
Middle Woodland / Late Woodland debated · Hopewell tradition or Fort Ancient tradition
Hilltop stone-walled enclosure 42 ha above Paint Creek; Hopewell vs Fort Ancient debate.
🇺🇸 United States · Earthwork
Middle Woodland Weeden Island 200–600 CE · Weeden Island / Gulf Hopewell
Crystal River satellite burial mound with Hopewell copper and quartz, Gulf Hopewell southernmost evidence.
🇺🇸 United States · Earthwork
Plaquemine Mississippian Emerald phase 1250–1600 CE · Plaquemine (Natchez)
Second-largest mound in N America, 10.7 m terraced pyramid, 1250–1600 CE.
🇺🇸 United States · Earthwork
Archaic–Woodland 1000 BCE–1000 CE · Woodland / Archaic
36.5-m quartz eagle effigy, 1000–500 BCE.
🇺🇸 United States · Ancient city
Caddoan Mississippian 800–1300 CE (Early Caddo) · Caddoan (Hasinai)
Southernmost Caddoan Mississippian center with three mounds, plaza and El Camino trace.
🇺🇸 United States · Earthwork
Middle Woodland Hopewell 100–400 CE · Hopewell tradition (Turner phase)
Hopewell enclosure-mound group source of copper effigies and mica tombs on Little Miami terrace.
🇺🇸 United States · Earthwork
Early Woodland, Adena culture 1000 BCE–1 CE (peak 250–150 BCE) · Adena
Largest conical burial mound in North America (62 ft/19 m high, 240 ft/73 m diameter, 60,000 tons earth moved by basket) built by Adena peoples at Moundsville, WV.
