Knowth is a Neolithic passage grave and an ancient monument of Bru na Boinne in the valley of the River Boyne in Ireland, UNESCO World Heritage Site

- Image ID: RTH93G
Knowth is a Neolithic passage grave and an ancient monument of Bru na Boinne in the valley of the River Boyne in Ireland, UNESCO World Heritage Site
Rudolf Ernst / Alamy Stock Photo
Image ID: RTH93G