Frogmore Mound Site (16 CO 9) is an archaeological site of the Late Coles Creek culture in Concordia Parish, Louisiana. The site is located west of Ferriday on US 84. It was added to the National Register of Historic Places on July 28, 2004. Description The site consists of a platform mound and associated village area with middens covering an area roughly by . The site originally had a walled ceremonial structure to in diameter. This structure was burned and subsequently covered with dirt. A mound, constructed in two stages very near each other chronologically, was built over top of the structure. The rectangular mound now measures in height, with the base being by , and the summit by . Excavations at the site have produced charcoal from beneath the mound that dates to 1020–1260 CE. Pottery recovered from the midden places the occupation of the site to the Late Coles Creek period. Frogmore archeological site As stated in NRHP registration form: See also Culture, phase, and chronological table for the Mississippi Valley DePrato Mounds Frogmore Plantation Piazza Cotton Gin, also located in Frogmore Plantation National Register of Historic Places listings in Concordia Parish, Louisiana References External links Louisiana Life Magazine:Mounds of Mystery Historical Marker Database: Ancient Mounds Trail - Frogmore Mound Archaeological sites of the Coles Creek culture Mounds in Louisiana Geography of Concordia Parish, Louisiana Archaeological sites on the National Register of Historic Places in Louisiana National Register of Historic Places in Concordia Parish, Louisiana