 Aerial illustration of the Portsmouth Earthworks Groups A, B, C, and D | |
| Location | Portsmouth, Ohio, U.S. |
|---|---|
| Region | Southern Ohio and Northeastern Kentucky |
| History | |
| Founded | 100 BCE |
| Abandoned | 500 CE |
| Cultures | Adena culture, Hopewell culture |
| Architecture | |
| Architectural styles | Earthworks, enclosure, causeway, causewayed ring ditch |
| Architectural details | Number of monuments: |
Horseshoe Mound | |
| Location | Scioto County, Ohio |
| Nearest city | Portsmouth, Ohio |
| Coordinates | 38°44′35.70″N 82°58′38.39″W / 38.7432500°N 82.9773306°W |
| Built | 499-0 BCE, 499-0 CE, 1000-500 CE |
| NRHP reference No. | 74001621 |
| Added to NRHP | 1974[1] |
Portsmouth Earthworks, Group A | |
| Location | Greenup County, Kentucky |
| Nearest city | South Portsmouth |
| Coordinates | 38°43′17.76″N 83°1′22.98″W / 38.7216000°N 83.0230500°W |
| Built | 499-0 BCE, 499-0 CE, 1000-500 CE, 1499-1000 CE, 1749-1500 CE, 1750-1799 CE |
| NRHP reference No. | 80001534[1] |
| Added to NRHP | December 4, 1980 |
The Portsmouth Earthworks are a large prehistoric mound complex constructed by the Native American Adena and Ohio Hopewell cultures of eastern North America (100 BCE to 500 CE).[2] The site was one of the largest earthwork ceremonial centers constructed by the Hopewell and is located at the confluence of the Scioto and Ohio Rivers, in present-day Ohio.
The majority of the mound complex site is now covered by the city of Portsmouth in Scioto County, Ohio.[2] Several individual sections of the complex have been included on the National Register of Historic Places.
- ^ a b "National Register Information System". National Register of Historic Places. National Park Service. March 13, 2009. Archived from the original on August 3, 2012. Retrieved November 3, 2010.
- ^ a b "Portsmouth Earthworks-Ohio History Central". Retrieved June 6, 2009.