-12000 DR to -9000 DR
The Crown Wars of the Elves erupted more than a dozen millennia ago, pitting nearly four generations of elf. The two greatest events of the Crown Wars that still have impact are the Dark Disaster and the Descent of the Drow. The Dark Disaster utterly destroyed the forest realm of Miyeritar, leaving the blasted plains that are now the High Moor. Perhaps due to the savagery of the Crown Wars or other factors long lost to time, the dark elves become corrupt during this era, broke away from their kinfolk, and after much warfare and cruelty they descended beneath the world's surface to become the deep elves, also known as the drow. »
Descent of the Drow; End of the Forth Crown War
Corellon's magic, as directed through his priests and High Mages, transforms the dark elves, whether the corrupt Ilythiiri or others, into the drow. Whether by magic or by the weaknesses that banish them from the sunlit lands, all drow retreat within two months' passing into the Underdark. »
Elves are summoned by the Seldarine to the site that becomes the Elven Court one month after the Descent of the Drow, to settle differences and restore peace among the elves. »