The T. N. Coles site (41RR3), also known as the Mustang Creek site, is an Early Caddo period (ca. A.D. 1000-1200) site with a single burial mound constructed on a tributary to the Sulphur River in East Texas. The site was never investigated by a professional archaeologist, but the available information about the site and the artifact findings indicate that the burial mound contained (and may still contain) at least one burial with multiple interments, very similar to Early Caddo period shaft tombs at the Gahagan and Mounds Plantation sites on the Red River in Northwest Louisiana, the Crenshaw site on the Red River in Southwest Arkansas, and the George C. Davis and Boxed Springs sites on the Neches and Sabine rivers in East Texas
