KSDK – It's one of the most-studied and controversial objects in human history.

The Shroud of Turin is a 14-foot long piece of cloth some believe to be the burial cloth of Jesus. It shows the imprint of a man with long hair and a bearded face, as well as markings that show nailed feet and hands.

But it also has many asking whether it's a medieval fake or a sacred relic.

One of the world's leading authorities on the Shroud of Turin, Mark Antonacci, lives in St. Louis.

He's the founder and president of the Resurrection of the Shroud Foundation. Watch the video above to hear his thoughts on the controversial relic.

The next international conference for the Shroud of Turin will be held in Chesterfield in October. You can find more information here: http://www.stlouisshroudconference.com/.

Read more about Antonacci here: http://www.testtheshroud.com/.