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372 places in the atlas, 32 of them inscribed as UNESCO World Heritage.
🇺🇸 United States · Earthwork
Middle Woodland Hopewell 100 BCE–500 CE · Hopewell tradition
Hopewell ceremonial village on Ohio/Wabash, 100 BCE–400 CE.
🇺🇸 United States · Rock-cut
Early Medieval (500–1000 CE) · Iron Age
Stepwell Reservoir West in Southwest, United States is a Early Medieval (500–1000 CE) rock_cut attributed to Iron Age culture.
🇺🇸 United States · Rock art
Early Medieval (500–1000 CE) · Classical
Vihara Cell Group West in Southwest, United States is a Early Medieval (500–1000 CE) rock art attributed to Classical culture.
🇺🇸 United States · Kurgan
Iron Age (1200 BCE–500 CE) · Iron Age
Saka Kurgan Chain East in Great Plains, United States is a Iron Age (1200 BCE–500 CE) kurgan attributed to Iron Age culture.
🇺🇸 United States · Megalith
Iron Age (1200 BCE–500 CE) · Iron Age
Watson Brake Mound in Ohio Valley, United States is a Iron Age (1200 BCE–500 CE) megalithic attributed to Iron Age culture.
🇺🇸 United States · Earthwork
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.
🇺🇸 United States · Earthwork
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
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
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
Mississippian, Etowah phase 1000–1550 CE · Mississippian (Muscogean ancestors)
19-m Mississippian Temple mound with copper falcon plates and marble effigies.
🇺🇸 United States · Geoglyph
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
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
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
Late Archaic 1700–1100 BCE (peak 1500–1200 BCE) · Poverty Point culture
Late Archaic earthwork complex (1700–1100 BCE) with six concentric C-shaped ridges (1.2 km outer diameter) and six mounds, including 22 m-high Mound A – one of largest Archaic earthworks in North…
🇺🇸 United States · Archaeological wonder
Pueblo II–III 850–1250 CE (Chacoan fluorescence 1020–1140) · Ancestral Puebloan (Anasazi) / Chacoan
Chacoan canyon with 15 monumental Great Houses (Pueblo Bonito 650 rooms, 35 kivas) and engineered roads, built 850–1150 CE by Ancestral Puebloans as ritual and trade center for San Juan Basin,…
🇺🇸 United States · Earthwork
Hopewell 1–500 CE · Hopewell tradition
121-acre Hopewell circle-square with 335 m Great Circle and Seip-Pricer mound, UNESCO 2023.
🇺🇸 United States · Ancient village
Pueblo I–III (600–1300 CE) · Ancestral Puebloan (Anasazi)
Ancestral Puebloan cliff dwellings (600–1300 CE) with 600 sites including Cliff Palace (150 rooms, 23 kivas) under sandstone alcoves, transitioning from pithouses to masonry pueblos before…
🇺🇸 United States · Buried city
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 · Ancient village
Ancestral Pueblo (1275–1350 pueblo) + Spanish/American inscriptions 1605–1906 · Zuni / Ancestral Pueblo → Oñate Spanish 1605 to Beale wagon 1857
El Morro Atsinna excavated by Watson Smith 1940s, Oñate 1605 'pasó por aquí' oldest European inscription SW US.
🇺🇸 United States · Rock art
Great Basin archaic to Numic (12000 BCE–1850 CE rock; peak 4000–1000 BCE Coso Representational) · Great Basin Coso (Northern Uto-Aztecan?) predecessors
China Lake Coso excavated by Grant & Farley 1960s, UCLA bighorn sheep style 4000 BCE, navy protected.
🇺🇸 United States · Ancient village
Kayenta Ancestral Pueblo (1250–1300 CE) + inscriptions 1661 Nieves, 1930s cowboys · Kayenta / Navajo / Spanish
Inscription House closed since 1968, Kayenta 1270 pueblo with Spanish 1661 nieves inscription.
🇺🇸 United States · Rock art
Archaic to Ancestral Puebloan (3000 BCE–1300 CE) · Southern Paiute / Ancestral Puebloan
Parashant Nampaweap recorded by Peel 1970s, Puebloan pilgrimage trail markers to Grand Canyon.
🇺🇸 United States · Rock art
Archaic Barrier (6000 BCE) → Fremont (600 CE) → Ute (1800 CE) · Barrier Canyon → Fremont → Ute layered
Sego three cultures described by Castleton 1970s, highway-visible 14 m panel with 75 figures.
🇺🇸 United States · Rock art
Barrier Canyon Style (3000 BCE–500 CE) · Barrier Canyon archaic (pre-Fremont)
Horseshoe Great Gallery recorded by Schaafsma 1970s, Archaic Barrier Style before Anasazi.
