Krupp also pointed out that the slightly-bent line formed by the three pyramids was deviated towards the North, whereas the slight "kink" in the line of Orion's Belt was deformed to the South, meaning that a direct correlation would require one or the other to be inverted.[7] Indeed, this is what was done in the original book by Bauval and Gilbert (The Orion Mystery), which compared images of the pyramids and Orion without revealing that the pyramids' map had been inverted.[8] Krupp and Fairall find other problems with the claims, including the point that if the Sphinx is meant to represent the constellation of Leo, then it should be on the opposite side of the Nile (the 'Milky Way') from the pyramids ('Orion'),[6][7] that the vernal equinox around 10,500 BCE was in Virgo and not Leo,[6] and that the constellations of the Zodiac originate from Mesopotamia and were unknown in Egypt at the time.[8]