In 2022, Filippo Biondi and Corrado Malanga published Synthetic Aperture Radar Doppler Tomography Reveals Details of Undiscovered High-Resolution Internal Structure of the Great Pyramid of Giza, which revealed the network of passages and rooms yet to be explored in the Great Pyramid. One particular room is very large, close to the north face, and may be what the less-precise Scan Pyramids project detected as a large void. Even though we do not yet have access to this room, the published dimensions are enough to “reverse-engineer” the likely internal dimensions. As with everything about Giza and the Great Pyramid, the room appears to be a mathematical tour de force like the King’s Chamber, including the usual π, φ2, and e. These numbers, all over Giza, continue to challenge the historical time-line.