Mounds, The. Site of two Indian Burial Mounds built between 2,000 and 3,000 years ago by the Adena people. Late 19th century excavations found skeletons, pottery, copper implements, and other antiquities. Memorial Park, Mounds & Indiana Sts., Monongahela, PA by Pennsylvania Historical and Museum Commission Colour: blue Wikimedia: Flickr: Google Streetview OpenStreetMap
