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The PORTSMOUTH EARTHWORKS are a large prehistoric mound complex constructed by the Ohio
Ohio
Hopewell culture mound builder indigenous peoples of eastern North America (100 BCE to 500 CE). 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
Ohio
.

The majority of the mound complex site is now covered by the city of Portsmouth in Scioto County, Ohio . Several individual sections of the complex have been included on the National Register of Historic Places .

CONTENTS

* 1 Description

* 1.1 Portsmouth Earthworks, Group B * 1.2 Portsmouth Earthworks, Group A * 1.3 Portsmouth Earthworks, Group C

* 2 Gallery of Squier and Davis maps * 3 See also * 4 References * 5 External links

DESCRIPTION

Originally, the Portsmouth Earthworks
Portsmouth Earthworks
consisted of three sections extending over twenty miles of the Ohio River
Ohio River
valley, crossing from Ohio
Ohio
to Kentucky in several places. It was surveyed and mapped by E. G. Squier in 1847 for inclusion in the seminal archaeological and anthrolopological work Ancient Monuments of the Mississippi Valley .

PORTSMOUTH EARTHWORKS, GROUP B

Overview of the Horseshoe Mound
Mound

The northernmost section was made up of a number of circular enclosures, two large horseshoe-shaped enclosures, and three sets of parallel-walled roads leading away in different directions. One set of walled roads extends across the Ohio River
Ohio River
into South Portsmouth, Kentucky to the southwest to Portsmouth Earthworks, Group A. Another set of walled roads lead to the southeast where it also crossed the Ohio River
Ohio River
and lead to Portsmouth Earthworks, Group C. The third set of walled roads lead to the northwest for an undetermined distance, and may point to Tremper Mound
Mound
and Works , some 5 miles away. The City of Portsmouth maintains a public park which includes one of the remaining horseshoe-shaped enclosures, known as Mound
Mound
Park, it is the only publicly accessible part of the complex. Under the name Horseshoe Mound
Mound
it was listed on the National Register of Historic Places in 1974.

PORTSMOUTH EARTHWORKS, GROUP A

One of the surviving walls

Also known as the OLD FORT EARTHWORKS (15Gp1) it is a series of rectangular enclosures near South Portsmouth in Greenup County, Kentucky . Group A is a large square enclosure with two series of parallel walls extending from the northeast and southwest corners. The Old Fort Earthworks consist of several sites, including the Old Fort Earthworks (15Gp1), Mays