🇺🇸 United States · Earthwork
Crystal River Archaeological State Park
Deptford–Hopewell–Weeden Island 500 BCE–1000 CE · Deptford / Hopewell Gulf Coast
Six mounds 500 BCE–1000 CE with Hopewell copper and stelae.
🇺🇸 United States · Earthwork
Town Creek Indian Mound
Pee Dee Mississippian 1150–1400 CE · Pee Dee culture
Pee Dee Mississippian platform mound 1150–1400 CE.
🇺🇸 United States · Earthwork
Tremper Mound and Earthwork
Hopewell 100–500 CE · Hopewell tradition
Effigy mound with 136 portrait pipes, Hopewell 100–300 CE.
🇺🇸 United States · Earthwork
Aztalan State Park
Mississippian 1000–1250 CE · Mississippian (Cahokian)
Northernmost Mississippian walled town 1000–1250 CE.
🇺🇸 United States · Earthwork
Owl Creek Mounds
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
Marksville State Historic Site
Marksville 0–400 CE · Marksville culture
Semicircular enclosure 530 m wall, Marksville Southern Hopewell 0–400 CE.
🇺🇸 United States · Earthwork
Quarry Gallery Americas 79 — United States Region 7
Period Bronze Age · Regional culture Americas-Mound
Quarry Gallery Americas 79 — United States Region 7 in United States Region 7, United States is a Neolithic earthwork with stratified deposits and regional significance.
🇺🇸 United States · Buried city
Cahokia Mounds
Emergent Mississippian to Stirling phase · Mississippian (Illinoian)
Largest Mississippian centre (650–1400 CE) with 120 mounds including Monks Mound (30 m, 1000x700 ft base, largest earthen platform north of Mexico).
🇺🇸 United States · Earthwork
Center for American Archeology
The Center for American Archeology, or CAA, is an independent non-profit 501(c)(3) research and education institution located in Kampsville, Illinois, USA, near the Illinois River.
🇺🇸 United States · Earthwork
Yon Mound and Village
Middle Woodland to Mississippian (100 BCE–1450 CE) · Swift Creek → Weeden Island → Fort Walton (late Mississippian)
Middle Woodland Swift Creek to Fort Walton Mississippian mound-village (100 BCE–1450 CE) on Apalachicola River terrace: flat-topped platform 6 m high (45×30 m) with ramp to plaza, adjacent burial…
🇺🇸 United States · Earthwork
Pinson Mounds State Archaeological Park
Middle Woodland 1–500 CE (Pinson phase) · Middle Woodland (Pinson Mound culture, Hopewell-influenced)
Largest grouping of platform mounds in Tennessee and largest Middle Woodland earthwork complex: 17 mounds (12 platform, burial, effigy) in 1,200-acre Forked Deer River park, with Saul's Mound (Sauls’…
🇺🇸 United States · Earthwork
Cedar-Bank Works
Early to Middle Woodland (1000 BCE–300 CE) · Adena – early Hopewell
Paired Adena (1000–100 BCE) and Hopewell-era enclosures on left bank of Scioto 5 mi north of Chillicothe: large 350-m-diameter circular enclosure (12 ac) with interior ditch and 1.5 m embankment plus…
🇺🇸 United States · Earthwork
Pollock Works Earthworks
Middle Woodland Hopewell (200 BCE–300 CE) · Hopewell
Hopewell enclosure pair on Scioto River terrace 9 km southwest of Chillicothe: large sub-square 160×140 m (3 ha) with 1.2 m embankment and interior ditch, conjoined at corner to 80 m diameter circle…
🇺🇸 United States · Earthwork
Brick Church Mound and Village
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
Toltec Mounds Archeological State Park
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
Inner Chaco Canyon Citadel North — Chaco Canyon (55-11)
Medieval (regional) · Medieval
Inner Chaco Canyon Citadel North — Chaco Canyon (55-11) at Chaco Canyon, United States is a Medieval (regional) earthwork of the Medieval tradition, built c.
🇺🇸 United States · Earthwork
Moorehead Circle at Fort Ancient
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
Cowan Creek — South Causeway Secondary (Ohio)
Neolithic to Mississippian (3000 BCE–1400 CE) · Neolithic / Woodland; Hopewell
Cowan Creek — South Causeway Secondary (Ohio) in Ohio, Clinton County, Cowan Creek, United States is a Neolithic to Mississippian (3000 BCE–1400 CE) earthw…
🇺🇸 United States · Earthwork
Newark Octagon — North Avenue Causeway (Licking County)
Neolithic to Mississippian (3000 BCE–1400 CE) · Neolithic / Woodland; Hopewell
Newark Octagon — North Avenue Causeway (Licking County) in Ohio, Licking County, Newark, United States is a Neolithic to Mississippian (3000 BCE–1400 CE) e…
🇺🇸 United States · Earthwork
Hopeton Earthworks — East Wall Gateway
Neolithic to Mississippian (3000 BCE–1400 CE) · Neolithic / Woodland; Hopewell
Hopeton Earthworks — East Wall Gateway in Ohio, Ross County, Hopeton, United States is a Neolithic to Mississippian (3000 BCE–1400 CE) earthwork attributed…
🇺🇸 United States · Earthwork
Spruce Hill Earthworks
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 · Ancient village
Casa Grande Village — Pima Ancestral Great House Compound
Hohokam Colonial to Classic (750–1450 CE; peak 1350 CE) · Hohokam (Gila–Casa Grande community, Ancestral O'odham)
Classic Hohokam Gila village 1350 CE — 60 ha compounds around Great House.
🇺🇸 United States · Earthwork
Rock Eagle Effigy Mound
Archaic–Woodland 1000 BCE–1000 CE · Woodland / Archaic
36.5-m quartz eagle effigy, 1000–500 BCE.
🇺🇸 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.