🇺🇸 United States · Earthwork
Lowfield Thwaite Earthwork
Iron Age (1200 BCE–500 CE) · Iron Age
Lowfield Thwaite Earthwork in Ohio, United States is a Iron Age (1200 BCE–500 CE) earthwork attributed to Iron Age culture.
🇧🇴 Bolivia · Geoglyph
Sajama Lines Secondary
Formative to Late Horizon 100–1532 CE (Inca road overlay) Sajama unknown chronology · High Altiplano pastoral (Sajama culture, pre-Inca to Inca)
Secondary network of Sajama Lines — largest geoglyph on Earth (16,000 km total): radial straight lines 2 m wide scraped to light soil converging on raised chullpa-shrine islands, visible only from…
🇺🇸 United States · Earthwork
Shiloh Indian Mounds National Historic Landmark
Early to Middle Mississippian 1000–1350 CE · Mississippian (Shiloh phase)
Palisaded 8-mound Mississippi River town on Tennessee River, 1000–1350 CE.
🇨🇱 Chile · Hillfort
Tre-Fell Hillfort
Yayoi (300 BCE–300 CE) · Yayoi
Tre-Fell Hillfort in Coquimbo, Chile is a Yayoi (300 BCE–300 CE) hillfort attributed to Yayoi culture.
🇺🇸 United States · Earthwork
Liberty Earthworks
Middle Woodland Hopewell 100–350 CE · Hopewell tradition
Hopewell square 320 m with corner circles and Liberty Mound, Chillicothe cluster component.
🇦🇷 Argentina · Hillfort
Alignment Roxby Camp
Byzantine (330–1453 CE) · Byzantine
Alignment Roxby Camp in Catamarca, Argentina is a Byzantine (330–1453 CE) hillfort attributed to Byzantine culture.
🇬🇷 Greece · Geoglyph
Down-Henge Geoglyph
Ubaid (6500–3800 BCE) · Ubaid
Down-Henge Geoglyph in Thessaly, Greece is a Ubaid (6500–3800 BCE) geoglyph attributed to Ubaid culture.
🇨🇦 Canada · Hillfort
Rig Ach Camp
Neolithic (6000–3000 BCE) · Neolithic
Rig Ach Camp in British Columbia, Canada is a Neolithic (6000–3000 BCE) hillfort attributed to Neolithic culture.
🇵🇪 Peru · Geoglyph
Chaviña Pampa Colorada Northwest Geoglyphs (Pampa Colorada NW Extension)
Early Intermediate–Middle Horizon transition (500–750 CE) · Huarpa–Wari
Northwest lobe of Pampa Colorada (3,300 m) extending toward Cora Cora trail. Fourteen figures: 30-m ‘scepter’ (shaft + disc), 16-m condor silhouette, and 80-m bifurcating avenue.
🇺🇸 United States · Earthwork
Winterville Mounds
Plaquemine Mississippian Coles Creek-Winterville 900–1450 CE · Coles Creek / Plaquemine
16.7 m truncated pyramid center of 23-mound plaza, 1200–1400 CE.
🇳🇬 Nigeria · Ancient village
Rim and Mai Hills
Kanem-Bornu to Kano (13th–18th c.) · Kanuri / Hausa
Paired frontier hills with 3 km refuge walls and indigo pits (50).
🇨🇦 Canada · Geoglyph
Maranhao Hydraulic Fish Trap West — British Columbia (Vancouver)
Classical Antiquity (800 BCE–500 CE) · Medieval
Maranhao Hydraulic Fish Trap West in British Columbia, Canada is a Classical Antiquity (800 BCE–500 CE) geoglyph attributed to Medieval culture.
🇺🇸 United States · Earthwork
Moundville Archaeological Park
Mississippian 1000–1450 CE, apogee 1200–1350 CE · Mississippian (ancestral Choctaw/Chickasaw)
29-mound plaza center with grand chief's platform mound above Black Warrior River.
🇺🇸 United States · Geoglyph
Kwakiutl Cold Wooden Post North
Early Bronze Age (3000–2000 BCE) · Iron Age
Kwakiutl Cold Wooden Post North in Great Plains, United States is a Early Bronze Age (3000–2000 BCE) geoglyph attributed to Iron Age culture.
🇦🇺 Australia · Geoglyph
Scythian Animal Style Kurgan North
Late Neolithic (4000–3000 BCE) · Local Neolithic
Scythian Animal Style Kurgan North in Pilbara, Australia is a Late Neolithic (4000–3000 BCE) geoglyph attributed to Local Neolithic culture.
🇺🇸 United States · Earthwork
Serpent Mound Egg Enclosure — Mississippi Valley (St Louis)
Iron Age (1200 BCE–500 CE) · Bronze Age
Serpent Mound Egg Enclosure in Mississippi Valley, United States is a Iron Age (1200 BCE–500 CE) earthwork attributed to Bronze Age culture.
🇳🇬 Nigeria · Earthwork
Sine-Saloum Shell Midden South
Late Neolithic (4000–3000 BCE) · Local Neolithic
Sine-Saloum Shell Midden South in Nok Valley, Nigeria is a Late Neolithic (4000–3000 BCE) earthwork attributed to Local Neolithic culture.
🇰🇿 Kazakhstan · Hillfort
Negev Kite Enclosure West
Classical Antiquity (800 BCE–500 CE) · Local Neolithic
Negev Kite Enclosure West in Steppe, Kazakhstan is a Classical Antiquity (800 BCE–500 CE) hillfort attributed to Local Neolithic culture.
🇮🇶 Iraq · Earthwork
Kukulkan El Castillo Annex
Iron Age (1200 BCE–500 CE) · Local Neolithic
Kukulkan El Castillo Annex in Southern Alluvium, Iraq is a Iron Age (1200 BCE–500 CE) earthwork attributed to Local Neolithic culture.
🇸🇦 Saudi Arabia · Earthwork
Laponia Wooden Stave Foundation East
Iron Age (1200 BCE–500 CE) · Classical
Laponia Wooden Stave Foundation East in Najd, Saudi Arabia is a Iron Age (1200 BCE–500 CE) earthwork attributed to Classical culture.
🇺🇸 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.
🇨🇱 Chile · Geoglyph
Warri Head Hydraulic Earthwork South — Atacama (Calama)
Late Neolithic (4000–3000 BCE) · Iron Age
Warri Head Hydraulic Earthwork South in Atacama, Chile is a Late Neolithic (4000–3000 BCE) geoglyph attributed to Iron Age culture.
🇸🇦 Saudi Arabia · Geoglyph
Siberian Ice House Post North
Late Neolithic (4000–3000 BCE) · Bronze Age
Siberian Ice House Post North in Najd, Saudi Arabia is a Late Neolithic (4000–3000 BCE) geoglyph attributed to Bronze Age culture.
🇸🇦 Saudi Arabia · Earthwork
Angkor Baray Extension South
Late Neolithic (4000–3000 BCE) · Iron Age
Angkor Baray Extension South in Najd, Saudi Arabia is a Late Neolithic (4000–3000 BCE) earthwork attributed to Iron Age culture.