-1800 DR

* Duergar and others invade Holorarar and Ultoksamrin in Deep Shanatar in the Kin Clashes. Shanatar falls, leaving only Iltkazar still standing.
* The duergar Queen Duerra of Underspires ascends to godhood, becoming Deep Duerra.
* Without Duerra's mortal leadership, the capital city of Dunspeirrin, City of Sunken Spires, declines for centuries.
* The ensnarement and maze spells are invented by Netherese arcanist Valdick.
==Appendix==
===References===
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