Claim: Carson Mounds, also known as the Carson Site, stretch across an expanse of land over 1.6 kilometres and was listed on the National Register of Historic Places in 1979.
Evidence: The Carson Mounds, (22 CO 505), also known as the Carson Site and Carson-Montgomery- is a large Mississippian culture archaeological site located near Clarksdale in Coahoma County, Mississippi in the Yazoo Basin. April 19, 1979 186 acres (75 ha) The Mississippian culture component of Carson extends east to west approximately 1.5 miles (2.4 km) and north to south .5 miles (0.80 km) and covers approximately 150 acres (0.61 km).