🇺🇸 United States · Hydraulic works
Holtwood Dam
Holtwood Dam (also Holtwood Hydroelectric Dam, Holtwood Hydroelectric Plant, McCalls Ferry Dam) is the oldest of three major dams built across the lower Susquehanna River, and the middle location of…
🇺🇸 United States · Ancient village
Casamero Pueblo
Pueblo II Chacoan (1000–1150 CE) · Pueblo II Chacoan (1000–1150 CE)
Casamero Pueblo in New Mexico, McKinley County, Rio Puerco, near Prewitt, United States is a Pueblo II Chacoan (1000–1150 CE) settlement attributed to Pueblo II Chacoan (1000–1150 CE) culture.
🇺🇸 United States · Rock art
Newspaper Rock Petroglyphs
Basketmaker to Historic Ute (500 BCE – 1850 CE) · Basketmaker-Anasazi (Ancestral Pueblo), Fremont, Navajo, Ute
Utah Wingate cliff 650 figures 500 BCE–19th c. palimpsest from Basketmaker to Ute.
🇺🇸 United States · Hydraulic works
American Canal
The American Canal is an irrigation canal in the Upper Rio Grande Valley near El Paso, Texas.
🇺🇸 United States · Earthwork
Yon Mound and Village
Middle Woodland to Mississippian (100 BCE–1450 CE) · Swift Creek → Weeden Island → Fort Walton (late Mississippian)
Middle Woodland Swift Creek to Fort Walton Mississippian mound-village (100 BCE–1450 CE) on Apalachicola River terrace: flat-topped platform 6 m high (45×30 m) with ramp to plaza, adjacent burial…
🇺🇸 United States · Ancient village
Lindenmeier Site
Folsom Paleo-Indian (10,600 – 10,200 BCE) · Folsom
Lindenmeier Site in Colorado, United States is a Folsom Paleo-Indian (10,600 – 10,200 BCE) ancient village attributed to Folsom culture.
🇺🇸 United States · Tell
Las Colinas Tempe Hohokam Village
Pre-Classic to Classic Hohokam (700–1300 CE) · Hohokam Pre-Classic (Colonial) → Classic Sedentary
Las Colinas Tempe Hohokam Village is the canal-lattice village at the Agua Fria–Salt River confluence west of Tempe — a Sedentary Colonial-to-Sedentary (700–1300 CE) Hohokam canal village before…
🇺🇸 United States · Archaeological wonder
Governor Aker Observatory
Governor Aker Observatory is an astronomical observatory, part of Eastern Arizona College's Discovery Park Campus (formerly known as Discovery Park) in Safford, Arizona (US).
🇺🇸 United States · Cemetery
Indian Knoll
Late Archaic (3000 – 1500 BCE) · Shell Mound Archaic
Indian Knoll in Kentucky, United States is a Late Archaic (3000 – 1500 BCE) cemetery attributed to Shell Mound Archaic culture.
🇺🇸 United States · Hydraulic works
Embudo Creek
Embudo Creek, also known as Rio Embudo, is formed by the confluence of the Rio Pueblo and Santa Barbara Creek near Peñasco in Taos County, New Mexico.
🇺🇸 United States · Ancient village
Chimney Rock Pueblo (Chimney Rock National Monument)
Chaco Bonito (Late Pueblo II) · Chaco (highland Ancestral Pueblo)
Perched astronomical great-house pueblo (c.1075–1125 CE, Chacoan) on 2,280 m ridge between two 30-m chimney pinnacles — southernmost Chaco outlier controlling Upper San Juan timber/ game highland.
🇺🇸 United States · Earthwork
Pinson Mounds State Archaeological Park
Middle Woodland 1–500 CE (Pinson phase) · Middle Woodland (Pinson Mound culture, Hopewell-influenced)
Largest grouping of platform mounds in Tennessee and largest Middle Woodland earthwork complex: 17 mounds (12 platform, burial, effigy) in 1,200-acre Forked Deer River park, with Saul's Mound (Sauls’…
🇺🇸 United States · Ancient village
Pueblo Grande (S'edav Va'aki)
Hohokam Pre-Classic to Classic (450–1450 CE) · Hohokam (Salt River branch)
Classic Hohokam great-house platform-mound town (c.450–1450 CE) at heart of modern Phoenix — largest Hohokam platform mound in Salt River valley, controlling 30 km Grand Canal system irrigating 70…
🇺🇸 United States · Earthwork
Cedar-Bank Works
Early to Middle Woodland (1000 BCE–300 CE) · Adena – early Hopewell
Paired Adena (1000–100 BCE) and Hopewell-era enclosures on left bank of Scioto 5 mi north of Chillicothe: large 350-m-diameter circular enclosure (12 ac) with interior ditch and 1.5 m embankment plus…
🇺🇸 United States · Earthwork
Pollock Works Earthworks
Middle Woodland Hopewell (200 BCE–300 CE) · Hopewell
Hopewell enclosure pair on Scioto River terrace 9 km southwest of Chillicothe: large sub-square 160×140 m (3 ha) with 1.2 m embankment and interior ditch, conjoined at corner to 80 m diameter circle…
🇺🇸 United States · Ancient city
Towosahgy State Historic Site
Late Mississippian (Medley–Dorena phases) · Mississippian (Bootheel)
Fortified Late Mississippian center (1000–1350 CE) with 7 mounds and bastioned palisade on Bootheel terrace.
🇺🇸 United States · Earthwork
Brick Church Mound and Village
Mississippian (Thruston phase 1000–1370 CE) · Mississippian (Middle Cumberland – Thruston)
Mississippian mound-and-village on Mansker Creek near Nashville: platform mound 6 m high (50×35 m) rebuilt four times, truncating earlier Woodland component; village 4 ha with 300+ stone-box graves,…
🇺🇸 United States · Earthwork
Toltec Mounds Archeological State Park
Late Woodland – early Mississippian, Plum Bayou 650–1050 CE · Plum Bayou (aboriginal ancestors of Quapaw? Coles Creek related, not Caddo Mississippian)
Best-preserved Plum Bayou-culture platform-mound center (650–1050 CE) – 18 mounds (two tallest 15 m and 12 m) arranged geometrically around rectangular plazas and an earthwork embankment with…
🇺🇸 United States · Tumulus
Aztalan — Northwest Platform Mound (Jefferson)
Early Bronze Age to Iron Age (2500–500 BCE) · Hallstatt / Early Iron Age; Mississippian
Aztalan — Northwest Platform Mound (Jefferson) in Wisconsin, Jefferson County, Aztalan, United States is a Early Bronze Age to Iron Age (2500–500 BCE) tumu…
🇺🇸 United States · Ancient village
Stallings Island Mound
Late Archaic (Stallings phase, 3410–2730 BCE) · Stallings culture (Late Archaic, Southeastern US)
Type site of Stallings fiber pottery (3410–2730 BCE) — earliest ceramics in North America on Savannah River island.
🇺🇸 United States · Earthwork
Inner Chaco Canyon Citadel North — Chaco Canyon (55-11)
Medieval (regional) · Medieval
Inner Chaco Canyon Citadel North — Chaco Canyon (55-11) at Chaco Canyon, United States is a Medieval (regional) earthwork of the Medieval tradition, built c.
🇺🇸 United States · Earthwork
Moorehead Circle at Fort Ancient
Middle Woodland Hopewell (c.100 BCE–250 CE) with Fort Ancient reuse · Hopewell → Fort Ancient
Outer-embankment timber circle 60 m diameter discovered 2007 by magnetometry inside Fort Ancient Hilltop Enclosure (Hopewell 100 BCE–500 CE, later Fort Ancient reuse).
🇺🇸 United States · Ancient village
Lubbock Lake Landmark
Paleo-Indian to Late Prehistoric (Clovis to Puebloan) · Clovis, Folsom, Plano, Archaic, Late Prehistoric
11,000-year stratified Paleo-Indian site — Clovis mammoth kill to Folsom bison beds on Yellow House Draw, Texas.
🇺🇸 United States · Tumulus
Kolomoki — Mound A North Ramp (Georgia)
Early Bronze Age to Iron Age (2500–500 BCE) · Hallstatt / Early Iron Age
Kolomoki — Mound A North Ramp (Georgia) in Georgia, Early County, Kolomoki, United States is a Early Bronze Age to Iron Age (2500–500 BCE) tumulus attribut…