We join Ben from UnchartedX in the first of a series of swapcast episodes where we go through some of his amazing footage of ancient sites he's visited. In this episode we focus on the Serapeum of Saqqara in Egypt and the mystery of the massive, precision stone "boxes" in that site. How did they make them, what were they for, how did they move them into place through those small tunnels? How old are they really? We look at a lot of the little details in Ben's footage that shows us how deep the mystery of these artifacts really is.   Since this is a visual episode, there will be video of the entire conversation that includes the clips Ben showed us. So look for that on our YouTube channel, or on Ben's. But we did our best to provide descriptions for audio listeners.