🇺🇸 United States · Earthwork
Haida Mortuary Pole Base South
Early Bronze Age (3000–2000 BCE) · Medieval
Haida Mortuary Pole Base South in Great Plains, United States is a Early Bronze Age (3000–2000 BCE) earthwork attributed to Medieval culture.
🇺🇸 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.
🇺🇸 United States · Earthwork
Monte Albán Terrace South
Iron Age (1200 BCE–500 CE) · Local Neolithic
Monte Albán Terrace South in Colorado Plateau, United States is a Iron Age (1200 BCE–500 CE) earthwork attributed to Local Neolithic culture.
🇺🇸 United States · Tumulus
Moundville Pyramid B Annex
Late Neolithic (4000–3000 BCE) · Bronze Age
Moundville Pyramid B Annex in Mississippi Valley, United States is a Late Neolithic (4000–3000 BCE) tumulus attributed to Bronze Age culture.
🇺🇸 United States · Rock-cut
Altamira Bison Ceiling North — Southwest (Santa Fe)
Classical Antiquity (800 BCE–500 CE) · Classical
Altamira Bison Ceiling North in Southwest, United States is a Classical Antiquity (800 BCE–500 CE) rock_cut attributed to Classical culture.
🇺🇸 United States · Earthwork
Chavín de Huántar Plaza South — Colorado Plateau (Flagstaff)
Early Medieval (500–1000 CE) · Iron Age
Chavín de Huántar Plaza South in Colorado Plateau, United States is a Early Medieval (500–1000 CE) earthwork attributed to Iron Age 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.
🇺🇸 United States · Buried city
Kenchreai Harbour Mole East — Florida Shelf (Miami)
Late Neolithic (4000–3000 BCE) · Iron Age
Kenchreai Harbour Mole East in Florida Shelf, United States is a Late Neolithic (4000–3000 BCE) buried city attributed to Iron Age culture.
🇺🇸 United States · Megalith
Lepsius Mound Outlier — Mississippi Valley (Cahokia)
Early Bronze Age (3000–2000 BCE) · Medieval
Lepsius Mound Outlier in Mississippi Valley, United States is a Early Bronze Age (3000–2000 BCE) megalithic attributed to Medieval culture.
🇺🇸 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 States · Ancient village
Kin Klizhin (Chaco Outlier)
Pueblo II-III; Chaco outlier · Chacoan McElmo outlier / local Red Mesa synthesis
Southern Wash outlier great house (50 rooms, c.1085 CE) with L-plan and Chaco road causeway — wash-margin agricultural outlier illustrating Chaco emulation.
🇺🇸 United States · Ancient city
Lindenmeier Paleo Site — Mississippi Valley (St Louis)
Iron Age (1200 BCE–500 CE) · Classical
Lindenmeier Paleo Site in Mississippi Valley, United States is a Iron Age (1200 BCE–500 CE) ancient city attributed to Classical culture.
🇺🇸 United States · Hydraulic works
Saka Kurgan Chain East — Great Plains — saka-kurgan-
Early Medieval (500–1000 CE) · Local Neolithic
Saka Kurgan Chain East in Great Plains, United States is a Early Medieval (500–1000 CE) hydraulic attributed to Local Neolithic culture.
🇺🇸 United States · Ancient city
Storage Jar Cache East — Ohio Valley (Columbus)
Iron Age (1200 BCE–500 CE) · Local Neolithic
Storage Jar Cache East in Ohio Valley, United States is a Iron Age (1200 BCE–500 CE) ancient city attributed to Local Neolithic culture.
🇺🇸 United States · Pyramid
Han Yangling Pyramid South — Mississippi Valley (Cahokia)
Iron Age (1200 BCE–500 CE) · Iron Age
Han Yangling Pyramid South in Mississippi Valley, United States is a Iron Age (1200 BCE–500 CE) pyramid attributed to Iron Age culture.
🇺🇸 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 · Rock art
Kuelap Fortress North — Mississippi Valley (St Louis)
Early Medieval (500–1000 CE) · Bronze Age
Kuelap Fortress North in Mississippi Valley, United States is a Early Medieval (500–1000 CE) rock art attributed to Bronze Age culture.
🇺🇸 United States · Rock art
Chan Chan Citadel West — Colorado Plateau (Flagstaff)
Early Medieval (500–1000 CE) · Classical
Chan Chan Citadel West in Colorado Plateau, United States is a Early Medieval (500–1000 CE) rock art attributed to Classical culture.
🇺🇸 United States · Buried city
Cist Grave Field West
Late Neolithic (4000–3000 BCE) · Bronze Age
Cist Grave Field West in Ohio Valley, United States is a Late Neolithic (4000–3000 BCE) buried city attributed to Bronze Age 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.
🇺🇸 United States · Buried city
Pedra Furada Shelter
Iron Age (1200 BCE–500 CE) · Classical
Pedra Furada Shelter in Colorado Plateau, United States is a Iron Age (1200 BCE–500 CE) buried city attributed to Classical culture.
🇺🇸 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.