Newark ( Noork) is a city in and the county seat of Licking County, Ohio, United States, 33 miles (53 km) east of Columbus, at the junction of the forks of the Licking River. The population was 47,573 at the 2010 census, which makes it the 20th largest city in Ohio.
It is the site of much of the Newark Earthworks, a major ancient complex built by the Hopewell culture. The Great Circle portion and additional burial mounds are located in the neighboring city of Heath, Ohio. This complex has been designated as a National Historic Landmark and is operated as a state park by the Ohio History Connection.
Cultures of indigenous peoples lived along the river valleys for thousands of years before European contact. From more than two thousand years ago, 100 AD to 500 AD, people of the Hopewell culture transformed the area of Newark and Heath. They built many earthen mounds and enclosures, creating the single largest earthwork complex in the Ohio River Valley. The Newark Earthworks, designated a National Historic Landmark, have been preserved to document and interpret the area's significant ancient history. The earthworks cover several square miles and about 206 acres.