The mound is thought to belong to the Adena culture because of its conical shape and the character of the burials said to have been found within it. Unlike the Hopewell culture that followed them, Adena peoples tended to build conical mounds. The Adena culture, named for the Adena Estate in Chillicothe, the home of Ohio's sixth governor, Thomas Worthington, arose in the Ohio River Valley by about 1,000 BC. As the first people in the region to domesticate plant foods such as squash and sunflower, they lived in semi-permanent settlements of two to four cone-shaped bark structures near streams. They were among the first to make pottery in what is now Ohio, including pots as large as eighteen inches high and twelve to fourteen inches in diameter, and they made many tools from bone and flint for daily work, with the spear as their principal hunting tool. They also created tubular smoking pipes from stone or clay, wore copper, shell, and slate ornaments such as rings, bracelets, and necklaces, and carved stone tablets with elaborate abstract designs. The Adena were the first in Ohio to build earthworks and burial mounds, and they developed elaborate funeral ceremonies in which their dead were buried beneath earthen mounds that grew over time, sometimes with square or rectangular log tombs enclosing bodies within the mounds.