Archaeologists report finding an ancient monument located about three miles from Stonehenge that may have served as an earlier “prototype” for the structures at the famous site. The reporting describes the newly identified monument as a potential “sister” site to Stonehenge, suggesting it could help explain how Stonehenge was developed over time. According to the accounts provided, the discovery is based on archaeological investigation at the nearby location and the interpretation of the site’s features in relation to Stonehenge’s known layout. The sources frame the find as a possibility rather than a definitive conclusion, indicating that further study is likely needed to confirm how closely the two sites are connected and whether the nearby monument truly predates or influenced Stonehenge’s construction. Overall, the reports highlight the prospect that the nearby monument may contribute to understanding the origins and development of Stonehenge’s engineering and design.