Portsmouth Earthworks

Portsmouth Earthworks
Aerial illustration of the Portsmouth Earthworks Groups A, B, C, and D
LocationPortsmouth, Ohio, U.S.
RegionSouthern Ohio and Northeastern Kentucky
History
Founded100 BCE
Abandoned500 CE
CulturesAdena culture, Hopewell culture
Architecture
Architectural stylesEarthworks, enclosure, causeway, causewayed ring ditch
Architectural detailsNumber of monuments:
Horseshoe Mound
LocationScioto County, Ohio
Nearest cityPortsmouth, Ohio
Coordinates38°44′35.70″N 82°58′38.39″W / 38.7432500°N 82.9773306°W / 38.7432500; -82.9773306
Built499-0 BCE, 499-0 CE, 1000-500 CE
NRHP reference No.74001621
Added to NRHP1974[1]
Portsmouth Earthworks, Group A
LocationGreenup County, Kentucky
Nearest citySouth Portsmouth
Coordinates38°43′17.76″N 83°1′22.98″W / 38.7216000°N 83.0230500°W / 38.7216000; -83.0230500
Built499-0 BCE, 499-0 CE, 1000-500 CE, 1499-1000 CE, 1749-1500 CE, 1750-1799 CE
NRHP reference No.80001534[1]
Added to NRHPDecember 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.

  1. ^ 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.
  2. ^ a b "Portsmouth Earthworks-Ohio History Central". Retrieved June 6, 2009.