Over the past hundred years or so, the ocean floor has been so thoroughly mapped that we can say with reasonable certainty that Atlantis, if it ever existed, is not on the ocean floor. A recent Vatic Report article suggests that Atlantis may be buried beneath two miles of ice on the South Pole. As per the Theory of Continental Drift (and perhaps Polar Shift), Atlantis is said to have drifted, over a brief span of time, to where the South Pole now lies.
The fossil record supports this theory. Fossilized leafy plants have been found under miles of Antarctic ice. Since leafy plants can't thrive in an area that receives only six months of sunlight a year, either the continent or the globe must have shifted.
When comparing centuries-old maps to places today, we must take into account both the cartographic skills of the day and what could have been actually known at the times the maps were drawn. It's useful, then, to make a few comparisons to determine just how closely two maps of places can resemble each other before we can suppose that the two maps must represent the same place.
Below are three maps of Taiwan:
Now let's compare two maps of Japan:
For more information, see Vatic Project's "Zero Point: Messages from the Past, part 1 of 3."