Lower Shawneetown, also known as Shannoah or Sonnontio, was an 18th-century Shawnee village located within the Lower Shawneetown Archeological District, near South Portsmouth in Greenup County, Kentucky and Lewis County, Kentucky. The population eventually occupied areas on both sides of the Ohio River, and along both sides of the Scioto River in what is now Scioto County, Ohio. It was added to the National Register of Historic Places on 28 April, 1983. It is near the Bentley site, a Madisonville Horizon settlement inhabited between 1400 CE and 1625 CE. Nearby, to the east, there are also four groups of Hopewell tradition mounds, built between 100 BCE and 500 CE, known as the Portsmouth Earthworks.
