Jeffers Mound is a Hopewell tradition Native American burial mound in Worthington, Ohio. The mound is all that remains of the ceremonial Worthington Earthworks site built between 100 B.C. and 400 A.D.[1][2] The mound is named after Herman Plesenton Jeffers, who owned the land the mound is situated on before its transfer to the Worthington Historical Society.[3]