 Research by the University of Louisville concluded that KYANG was part of the "Old Clarksville Phase", a group of Middle Archaic sites straddling the Ohio River in the vicinity of the Falls of the Ohio, dated circa 6000-4400 BC, including a prehistoric component at the Old Clarksville Site.It is also included in the later Lone Hill Phase, circa 4400-3200, a group of sites all located in Jefferson County.Extensive deposits of bone from the Middle Archaic period are present in KYANG's large midden, preserved by its highly alkaline soil, and their high degree of preservation facilitated a comprehensive study of local Middle Archaic bone-working toolmaking technology in 1992.