Marcell Fóti has proposed an explanation for the enigmatic stonework of the ancient world. In our discussion, he delves into the Natron Theory, a comprehensive hypothesis on how the ancient Egyptians could fabricate stone. According to him, this theory also explains the mysterious scoop marks around the unfinished obelisk in Egypt, the polygonal masonry in Peru, and the manufacturing of precise Egyptian statues. He demonstrates his experiments where granite is chemically decomposed with primitive tools and recast into geopolymers.