A 2,000 year old pipe from the ancient Adena culture is now the stateâs official artifact. Gov. John Kasich signed legislation to that effect Thursday, alongside a case holding the pipe in front of dozens of students from Columbus School for Girls. âNow they told me that they have finally figured out how old this is, 10 A.D., so over 2,000 years old. Thatâs perfect isnât it?â? Kasich asked. The prehistoric effigy pipe was linked to the ancient Adena culture. It was found in 1901 in a burial mound near Chillicothe. In 2009, fourth-graders at the Columbus School for Girls proposed the Adena pipe be made the stateâs official artifact. During the years, other CSG classes joined the push for the bill as they studied Ohioâs political system. Students told lawmakers they learned the legislative process requires patience and persistence, and that sometimes people speak at hearings for longer than their allotted time.