On the basis of the above, it appears necessary to provide a plausible explanation as a key to understanding the function of the structures found inside the pyramid, taking into account that this interpretation is only intended to be a starting point for further interpretative ideas that could arise from a serene discussion at the level of the scientific community. The authors’ vision starts from what we have already previously published in [72] and widely discussed [12,16,22,23,28,31,73,74,75]. Starting from the observation of the outside of the three pyramids of the Giza plateau, for the first time, we were able to establish that the three pyramids of Khnum-Khufu, Kefren and Menkaure have eight sides. This feature, known only for the larger pyramid, is now extended to the other two. According to the authors of [73], the idea that the pyramids of the Giza plateau had this characteristic is due to the need to convey, in an orderly manner, the water that flowed along the faces of the pyramidal structures. In the case of the pyramid of Khnum-Khufu, which we have analyzed in depth, it can be assumed, in analogy with other authors [5,25,76], that it was surrounded by an enormous basin full of water, which allowed the circulation of some boats. These boats were used by some attendants with the task of bringing the water to about 90 m high, pouring it into the south shaft by using many rotating stones probably similar to the Sabu diorite stone [28]. The SAR tecnique allows us to provide evidence that the shape of this monument does not resemble a perfect pyramidic form because of the presence of a double changing in slope: the first of which is 14.5 ca. degrees at approximately 20 m high, while the second one is 6 degrees ca. at approximately 100 m high. The Nile River’s water should have filled the basin up to the height of the first change of slope of the pyramid, thus allowing the Egyptian boats not to get stuck with the keel on the side of the pyramid itself. The water would have invaded the King’s chamber, but having reached the height of the granite basin inside the chamber (often referred to as the sarcophagus), it would not have exceeded that level in height and would have instead risen in the north shaft, whose entrance is placed at the same height as the basin, creating an air seal that effectively airlocked the room. Having the King’s chamber in fact hermetically sealed would have caused excess water to rise up the north shaft. The Queen’s chamber would also be filled with water, up to the height of the shafts, by means of two connections to the shafts of the King’s chamber, which were probably located in rooms 19 and 11, building a closed circuit, which is called Quincke’s tube [26]. As also proposed by other authors [77], the pyramid, with its megalithic structure, was placed in vibration by the wind and the low frequencies thus developed, which acted as a low-pass filter allowing only low frequencies to bounce back on the roof of the Zed toward the King’s chamber [16]. Such a room would behave like an air-filled bottle of Helmholtz [29], in which the granite basin acted as a bottleneck. The walls of the basin, vibrating at low and precise frequencies, linked to the internal and external measurements of the basin itself, proportional to multiples of $\pi$ and the Golden Ratio $\varphi$ [16], would have caused the water contained in the Quincke’s circuit to vibrate. These frequencies, traveling through the closed circuit of Quincke’s tube, at about 1400 m/s (speed of sound in the water), reached the Queen’s chamber, where the height of the water could not exceed the height of shafts from the floor. A particular frequency could be developed, which was suitably amplified by the correct dimensions of the niche present in the west wall, which acted as a sound box for a musical instrument, releasing into the air a sound frequency that was able to interact with a cylindrical container placed on the floor of the room, the traces of which are still visible [14]. This cylindrical container, probably made of wood, was put into resonance by the obtained low frequency. Two individuals were placed both in the basin of the King’s chamber and in the cylindrical container, in the Queen’s chamber and appropriately treated with this low sound frequency for curative and religious purposes [21]. At the end of the procedure, the King’s chamber was emptied by letting the water out of the Great Gallery and conveying it toward the room called “Grotto” toward the “Unfinished” chamber which brought the water back through a path in the floor, now occluded by debris, to the Nile. Subsequently, the Queen’s chamber was emptied in two steps: first, a granite “plug” in the corridor leading to the room was removed: (this passage actually has a slight hydraulic slope toward the Great Gallery) and the water was made to flow out, at the floor of the Great Gallery, where it was conveyed toward the “Grotto”. Subsequently, a plug placed in the floor was removed to finish the emptying of the room. The water thus conveyed through the hole in the floor, highlighted in a book published in 1877 [14], allowed the liquid to enter the room which, in our 3D reconstruction, corresponds to the number 14, eventually reaching the “Unfinished” room and returning to the Nile. The “Grotto” and room 14 are, in our opinion, necessary to stop the fall of water by slowing down its speed, with a mechanism similar to a common water jet pump used in laboratories to create vacuum in equipment, which is called Venturi’s tube. The evident traces of erosion due to water inside the pyramid rooms are in support of our interpretative hypothesis. The three boulders that today are wedged at the beginning of the oblique corridor leading to the Great Gallery would have been used as “plugs” to block the access of water to the exit of the pyramid or from the Queen’s chamber by making them flow in different positions as needed. The existence of passage 18 seems to be related to a little open room, which has never been described by anyone but is well tracked by photographic evidence, that appears located at the top of the entrance of the Great Gallery and was probably employed as security exit. The entire system of the ramps highlighted by the SAR could be interpreted as a gigantic resonant structure, having the purpose of equalizing any differences in vibration between the north and south part of the pyramid, with the aim of making the square structure reach number 10, placed around the Zed, an equalized vibrational signal. Similarly, the complex structure number 9 identified immediately below the plane on which the pyramid rests has a shape similar to structures used to absorb the effects of mechanical vibrations that are transmitted through the ground [30]. The technique proposed in this article, unlike the classical SAR tomography developed in [52,64,65], has penetration properties orders of magnitude greater because what is proposed uses the vibrations (the phonons) and not the photonic information. A disadvantage of the present technique could be the processing time needed to carry out vibrational raw data synthesis, which requires substantial computing resources. As an example, to collect a full resolution tomogram, e.g., the one in Figure 46b, using a DELL i7 PC with 32 GB of RAM installed, took approximately 6 days of computational time.