🇺🇸 United States · Ancient city
Caddo Mounds State Historic Site
Caddoan Mississippian 800–1300 CE (Early Caddo) · Caddoan (Hasinai)
Southernmost Caddoan Mississippian center with three mounds, plaza and El Camino trace.
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211 places in the atlas, 24 of them inscribed as UNESCO World Heritage.
🇺🇸 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.
🇺🇸 United States · Tell
Ancestral Puebloan (c.600-1300 CE) · Anasazi/Puebloan (Basketmaker to Pueblo III)
Homolovi II Pueblo — buried ancestral tell/village at Arizona.
🇺🇸 United States · Tell
Ancestral Puebloan (c.600-1300 CE) · Anasazi/Puebloan (Basketmaker to Pueblo III)
Kin Biniola Chaco Outlier — buried ancestral tell/village at New Mexico.
🇺🇸 United States · Earthwork
St Johns IIc–Mississippian 1050–1562 CE (midden 3000 BCE onward) · St Johns (Timucua ancestors)
St Johns platform mound 6.7 m with 300 m causeway and 6000-year midden, contacted 1562 by French.
🇺🇸 United States · Ancient village
Pueblo I-III; early Bonito · Chacoan pioneer (Pueblo I) → classic Bonito
Earliest canyon great house (800–930 CE) at eastern mouth — L-shaped early Bonito 80-room great house with great kiva, petroglyphs and Fajada alignment, Chaco genesis type.
🇺🇸 United States · Earthwork
Fort Walton Mississippian 1050–1500 CE · Fort Walton (Apalachee) Mississippian
Mississippian chiefdom capital on Lake Jackson with 11 m platform mound and famed repoussé copper plates.
🇺🇸 United States · Ancient village
Pueblo II-III; Chacoan · Chacoan Ancestral Pueblo → McElmo
Chaco south-side great house (72 rooms, 1100 CE) with tower kiva, enclosed plaza and South Road segment — Bonito to McElmo transition across canyon.
🇺🇸 United States · Earthwork
Middle Woodland Hopewell 100–350 CE · Hopewell tradition
Hopewell square 320 m with corner circles and Liberty Mound, Chillicothe cluster component.
🇺🇸 United States · Earthwork
Early Woodland Adena 1000–200 BCE · Adena
Second-largest conical mound in Ohio (65 ft/20 m high, 877 ft circumference) and tallest surviving Adena mound, preserved at Miamisburg Mound State Park.
🇺🇸 United States · Earthwork
St Johns I–II 1000 BCE–1500 CE · St Johns (Mayaou Timucua)
Shell-midden island famous for 6 m buried wooden owl totem (600 CE) and snail-shell ridges.
🇺🇸 United States · Earthwork
Early Woodland Adena 1000–400 BCE · Adena
Large Adena conical mound (38 ft/11.5 m high, 140 ft/43 m diameter) preserved in Indian Mound Reserve, Enon. One of the best-preserved Adena mounds in Ohio, surrounded by former enclosures now plowed.
🇺🇸 United States · Earthwork
Middle Woodland Hopewell 200 BCE–500 CE · Hopewell (Havana Hopewell)
Iowa's premier Hopewell center: 7 surviving mounds (originally 12) including large conical Mound 2 (8 m high) and linear Mound 7 on blufftop above Iowa-Mississippi confluence.
🇺🇸 United States · Earthwork
Early Woodland Adena · Adena
Adena conical mound (19.5 ft/6 m high, 95 ft/29 m diameter) preserved as Story Mound State Memorial, encircled by suburban Chillicothe but intact with original ditch.
🇺🇸 United States · Earthwork
Coles Creek 700–1200 CE to Plaquemine 1200–1500 CE · Coles Creek–Plaquemine (Troyville to Mississippian transition Louisiana)
Five-mound complex on Little River near Harrisonburg: largest flat-topped Mound A 8 m high with causeway to plaza, four smaller mounds enclosing 1.5 ha plaza.
🇺🇸 United States · Earthwork
Woodland Troyville culture 400–700 CE peak (with Baytown 100 BCE–400 CE foundations) · Baytown / Troyville-Coles Creek (Woodland to early Mississippian)
Nine-mound complex at Jonesville where 21st Louisiana's tallest pre-Columbian mound (Great Mound, 82 ft) stood until levee leveling. Baytown-Troyville-Coles Creek sequence with plaza and embankment.
🇺🇸 United States · Earthwork
Middle Woodland Miller culture Hopewell horizon 100 BCE–100 CE · Miller (Hopewell)
Six mounds at Natchez Trace Milepost 232.4 including large flat-topped Mound A and conical burial Mound B (10 ft high) with crematory basin and greenstone artifacts.
🇺🇸 United States · Earthwork
Late Woodland Plum Bayou 650–1050 CE (Baytown-Coles Creek to Mississippian transition) · Plum Bayou (Baytown/Coles Creek, Late Woodland Arkansas)
Premier Late Woodland platform mound center: 18 mounds (tallest Mound A 12 m) enclosing 16 ha plaza with embankment ditch and astronomical causeway aligned to 1-degree solar solstice.
🇺🇸 United States · Earthwork
Middle Woodland Miller culture contemporary with Hopewell 1–400 CE · Miller (Hopewell-influenced eastern Woodland); Hopewell
Eight low dome mounds (2–6 ft high) at Natchez Trace Milepost 286.7, best-preserved Middle Woodland mound group in northeast Mississippi.
🇺🇸 United States · Earthwork
Late Woodland to Mississippian 800–1200 CE · Late Woodland to Mississippian (Miller to Mississippian transition)
Five platform mounds (6–12 ft high) enclosing rectangular plaza 100×60 m at Owl Creek, Natchez Trace MP 243.
🇺🇸 United States · Earthwork
Middle Woodland Miller culture 100–600 CE · Miller (Woodland)
Isolated conical mound 25 ft/7.6 m high, 70 ft/21 m diameter, tallest extant Woodland mound in north Mississippi.
🇺🇸 United States · Earthwork
Early Woodland Adena to Early Hopewell transition · Adena
Adena conical mound (20 ft/6 m high, 100 ft/30 m diameter) preserved in Campbell Park, Columbus — one of few surviving mounds in Ohio's capital city.
