Ceramic pipes are an important part of the ancestral Caddo material culture in all parts of the Caddo area from as early as ca. A.D. 800, and there are also ceramic pipes known from Woodland period sites in the Caddo area. The Caddo pipe forms known include long–stemmed (up to 61 cm in length) Red River pipes, elbow pipes of several varieties, and platform pipes. All three pipe forms are known from Caddo sites at Lake Sam Rayburn in the Angelina River basin in East Texas