🇺🇸 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
Barnes Works
Middle Woodland Hopewell 100 BCE–500 CE · Hopewell
Immense Hopewell enclosure 12 ha west of Bainbridge: square (280 m side) attached to circle (320 m diameter) via parallel walls, with ditch-and-embankment 1.5 m high.
🇬🇧 United Kingdom · Megalith
Windmill Hill Causewayed Enclosure
Early Neolithic · Windmill Hill / Hembury Ware
Type-site causewayed enclosure 2 km from Avebury — three interrupted ditch circuits enclosing 8.5 ha.
🇺🇸 United States · Earthwork
Hontoon Island Mounds
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
Enon Mound
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
Toolesboro Mounds
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
Kincaid Mounds State Historic Site
Mississippian 1050–1400 CE (Kincaid phase) · Mississippian (Caborn-Welborn)
19-mound Mississippian town on Ohio River, 1050–1400 CE.
🇺🇸 United States · Earthwork
Story Mound
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
Mann Site
Middle Woodland Hopewell 100 BCE–500 CE · Hopewell tradition
Hopewell ceremonial village on Ohio/Wabash, 100 BCE–400 CE.
🇧🇴 Bolivia · Geoglyph
Sajama Lines
Formative to Imperial, 900 BCE–1500 CE active; origins possibly 1500 BCE · Aymara and pre-Aymara Andean; later Tiwanaku-Inca incorporation
Largest line network on Earth - 16,000 km of sacred Aymara pilgrimage lines.
🇺🇸 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 Kingdom · Geoglyph
Cerne Abbas Giant
Early Medieval 700–1100 CE per 2020 OSL; earlier prehistoric speculation revised · Late Saxon / Early Medieval Wessex (?)
55-m chalk giant with club on Dorset hill - maybe Saxon Hercules.
🇺🇸 United States · Earthwork
Foster Mounds
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.
🇳🇬 Nigeria · Earthwork
Sungbo's Eredo (Ogun) – Yoruba's 160-km Earthwork Rampart
Late Iron Age / Yoruba (Ijebu) · Ijebu Yoruba (Oloye Bilikisu Sungbo tradition)
Largest single monument in Africa: 160 km curvilinear ditch-and-bank snaking 20 m deep through rainforest around medieval Ijebu kingdom (800–1000 CE, Darling charcoal).
🇺🇸 United States · Earthwork
Effigy Mounds National Monument
Late Woodland 500–1200 CE, effigies c.700–1100 CE · Late Woodland (Ancestral Ioway/Ho-Chunk?)
31 bear-and-bird effigy mounds marching on Mississippi bluff.
🇺🇸 United States · Earthwork
Alligator Mound
Late Woodland / Fort Ancient 800–1200 CE · Fort Ancient (Late Woodland)
Effigy mound 205 ft/62 m long, 4–6 ft high, head oriented SW tail NE, depicting an opossum/underwater panther effigy on bluff south of Granville. Listed NRHP 1971.
🇺🇸 United States · Earthwork
Troyville Earthworks
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
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
Plum Bayou Mounds
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
Etowah Indian Mounds
Mississippian, Etowah phase 1000–1550 CE · Mississippian (Muscogean ancestors)
19-m Mississippian Temple mound with copper falcon plates and marble effigies.
🇪🇹 Ethiopia · Earthwork
Konso Cultural Landscape – Terraces & Waka Pillars
Konso · Konso people
UNESCO 2011 masterpiece of intensive hillside drystone terraces 60 km2 by Konso since 17th c (tradition 400 yr), stonewalled towns (paletas) with generation pa poles and waka anthropomorphic grave…
🇺🇸 United States · Geoglyph
Blythe Intaglios
Late Prehistoric 1000–1500 CE (OSL), possibility Protohistoric · Mojave/Quechan; Patayan culture
Mojave giant desert figures: 50-m human intaglios above Colorado River.
🇺🇸 United States · Earthwork
Pharr Mounds
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
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.