 During our research, we have discovered a number of methods to prove that there have indeed been lost civilizations here upon our planet along with their once high technologies. One of the most peculiar being polygonal masonry, which although claimed by some as geopolymer blocks, are made of all sorts of naturally found and subsequently quarried strata. However, what is interesting about this magnificent technique is the visual evidence of more primitive attempts made later, and also its selective use as casing stones, covering sections of far more ancient structures seemingly used in an attempt to conserve said sites from further erosion. One side of particular interest is that of Emilia found within modern-day Italy, which after part of the ancient wall collapsed, has been scanned in depth. Non-invasive techniques, such as ground penetrating radar, electrical resistive tomography, specifically adapted for this study, laser scanning and digital terrestrial photogrammetry, integrated with other geometric measures, were utilized and provided by total station and global navigation satellite systems. The results came as a surprise to those investigating the inner stability of the wall, finding three separate periods of activity. In other words, at least three now lost civilizations had been building the wall prior to the arrival of what is now commonly referred to as the Cyclopean period. According to the official study, quote, we defined a max wall thickness of about 3.5 meters for the cyclopic sector. We show details of the internal block organization, and we detected low resistivity values, interpretable with high water content behind the basal part of the walls. Could this be residual evidence of a great flood? They continued. Then quantitative analysis to assess reliable geotechnical stability was done. The results give rise for the first time to internal imaging of these ancient walls, highlighting features associated to different building styles related to different historical periods. End quote. Who were these ancient civilizations? Where did they go? Polygonal techniques are now a lost technology, a smoking gun argument in opposition of modern paradigm, one of a supposed unbroken timeline of continual evolution into our own modern civilization. The study, we feel, has not only proven our own hypothesis regarding multiple lost civilizations, but could also give credence to the theory of the great flood. It is a wall and indeed research discovery, which we find highly compelling.