The Xanzilisa is a vast desert, the defining feature of the lands. Around it's perimiter lie the nations of the different races, while within it lie the hidden secrets of the Prime. For the greatest number of their ruins seem to be concentrated here.
Beyond ancient structures, the Xanzilisa is a land with little tolerance for ignorance, lack of preparation or attention. While well-travelled routes through the great desert exist, it is still a wild and dangerous place where the weather can change as quickly as a sinkhole can fall out from beneath you. Monstrous beasts and and nocturnal horrors stalk the sands, as well.
No nation or race controls the desert, but nearly all send scouts and caravans through its wastes. The Halflings are perhaps the most familiar with the vast sand-sea.