🇺🇸 United States · Earthwork
Anderson Mounds
Middle Woodland Hopewell–Adena 250 BCE–200 CE · Hopewell tradition (Adena antecedent)
Hopewell circular enclosure and Great Mound, 250 BCE–200 CE.
🇺🇸 United States · Earthwork
Parkin Archeological State Park
Mississippian / Nodena phase 1000–1541 CE · Mississippian Nodena
Moat-walled Mississippian Casqui town visited by de Soto 1541.
🇺🇸 United States · Earthwork
Bynum Mounds
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
Fort Ancient Earthworks
Hopewell 1–450 CE · Hopewell tradition
Largest hilltop enclosure: 40 ha with 67 gateways, Hopewell 1–450 CE, UNESCO 2023.
🇺🇸 United States · Earthwork
Great Serpent Mound
Disputed: either Adena 320 BCE–200 CE or Fort Ancient 1070–1200 CE (latest C14 favors Fort Ancient 1120 CE) · Adena culture or Fort Ancient culture
Quarter-mile (411 m) effigy mound in shape of serpent with oval head swallowing an egg, 3 ft high, coiled tail atop meteor-crater plateau above Ohio Brush Creek, largest surviving effigy mound in…
🇺🇸 United States · Earthwork
Kolomoki Mounds Historic Park
Swift Creek–Weeden Island 350–750 CE · Swift Creek – Weeden Island
Woodland Mound A 17 m, Swift Creek 350–750 CE.
🇺🇸 United States · Earthwork
Angel Mounds State Historic Site
Mississippian 1000–1450 CE · Mississippian (Angel phase)
42 ha Mississippian walled town 1000–1450 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
Town Creek Indian Mound
Pee Dee Mississippian 1150–1400 CE · Pee Dee culture
Pee Dee Mississippian platform mound 1150–1400 CE.
🇺🇸 United States · Earthwork
Aztalan State Park
Mississippian 1000–1250 CE · Mississippian (Cahokian)
Northernmost Mississippian walled town 1000–1250 CE.
🇺🇸 United States · Earthwork
Wickliffe Mounds State Historic Site
Mississippian 1000–1350 CE · Mississippian (Wickliffe phase)
Eight-mound Mississippian town 1000–1350 CE.
🇺🇸 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 · Archaeological wonder
Chimney Rock National Monument
Pueblo II 1076–1125 CE · Chacoan
Chacoan Great House at 2310 m, lunar standstill alignment 1076–1093 CE.