http://www.theflatearthsociety.org/tiki/tiki-index.php?page=Antarctica
Hmm strange.
I assume that you also find it strange.
That being the case, you'll be horrified to learn that there is no evidence of anyone 'mapping' the coastline of Antarctica either - even for the 'globe' earth, the 'accepted' model, proven by science! (Unless of course - you subscribe to the idea that it was mapped in 1513 lol).
Please enlighten me and show me evidence of this exercise.