What can you tell about an ancient culture or civilization from the artifacts they left behind? Sometimes, these items tell us a lot about what our ancestors believed or how they lived their lives. Other times, they tell us almost nothing at all. Mysterious ancient artifacts will always be a source of fascination for us because we can't explain them. In some cases, we can't even say how they were built! We love hearing about mysterious riddles from long ago and far away, and so we're sharing some of them with you in this video.