Try and Map the Distance Around Antarctica on Google Earth

 Here's an interesting one:

On Google Earth, one can find out the total distance around the continents. However, when one tries to find out the distance of Antarctica, why is it that Google Earth goes all wonky and can't figure out the distance?

Wouldn't be because we're on a flat earth, and that Antarctica is in fact an ice wall, would it?

 No problems with Australia.

But what's going on with Antarctica?