in the middle of a vast barren desert is the town of Sandsail. Traveling to and from Sandsail is a dangerous prospect, the desert is cold at night and burning hot during the day, and there is little water. How does Saidsail survive the desert? In two ways. The first is a vast river that flows through the middle of the town, with a most strange starting point. The foot of a vast tree, Yggdrasil. The second is a fertile and dangerous land around... and below the world tree. The Labyrinth.