The Sipes Hill site (41RK602) is an ancestral Caddo site on Martin Creek, near Trammel's Trace, about 20 km from its confluence with the Sabine River. It is ca. 2 km downstream from the Martin Lake dam. The Sipes' Home site (41RK603) is about 100m to the northeast. This site was found and investigated by Buddy C. Jones in the 1950s or early 1960s. He did an unknown amount of excavations at the site, and ended up excavating at least one Caddo burial at the site; there are no available notes concerning these excavations or the burial feature, however. Whole vessels from the Sipes Hill site in the Jones collection are at the Gregg County Historical Museum.