You need to complete "The Mothercrystals" (the Promyvion fights). Upon defeating the third Promyvion boss, you'll exit to Lufaise Meadows and the portals leading you there will be unlocked for future use.
Edited, Jan 6th 2009 4:29pm by Pergatory
Pergatory (Asura, Kupo LS)WHM99 ~ SMN99 ~ DRK99 "If you want to know me, look inside your heart." -Lao Tzu