268 DR


 * Thargreve the Lesser becomes king of Cormyr.


 * The mithral supply beneath Undermountain is depleted. First discovered in −1288 DR by King Melair I of Clan Melairkyn, the end of the mithral will give the duergar cause to abandon Undermountain in 284 DR.


 * The continuing advance of the Anauroch desert causes the realm of Hlundadim to collapse. The Great Hlundadim, its ruler, disappears, and the goblinkin subjects divide into feuding, wandering bands.