Starfall Year 834, the 1st of February, the Land of the Far South.
The gathered snow over the lofty peaks of the West Mountains region had turned into countless flowing rivers, some of them flowing east and vanishing without a trace after entering the Central Black Forest. Those streaming souths would enter the Far South, flowing past the many forest and plains before assembling in the holy land of the elves—the Eternal Lake of a Thousand Islands.
The Eternal Lake itself was large enough to be declared a mainland sea. Within it were hundreds and thousands of islands, innumerable and sprinkled like stars over that azure lake surface.
The land surrounding the Eternal Lake was the territory of the elves. Innumerable elven tribe cities were spread across the lakeside and the river banks, but only the most influential and prosperous elven factions could receive an island within the lake as their core citadel.
Because there was where the Lifetrees were.