But...that's not how flipping maps works? You can rotate it, which retains the relationships between things and just changes the orientation, but you can't flip it, because that inverts the east-west relationships between things. That would be a mirror Earth, not just Earth turned upside-down.
Edit:
Wait, which map? This is chapter 93 page 4:
Spoiler
That doesn't really look at all like Europe. Maybe very vaguely like Scandinavia rotated about 45° clockwise, but still not really, and Scandinavia isn't that pointy and doesn't have a huge island in the Barents Sea. And where do you see India or South America?