A team of Italian scientists took the world by storm when they announced the discovery of a colossal underground complex plunging nearly 3,500 feet beneath Egypt's Giza Plateau and linking chambers the size of city blocks. Now the radar engineer who developed the imaging method, has gone public with evidence that he said leaves little room for doubt. In a new interview on Jesse Michels' American Alchemy podcast, Biondi revealed that four independent satellite operators, Umbra, Capella Space, ICE