987 DR

* Drow ambush a dwarven mining expedition traveling through tunnels of the Underdark beneath the Trackless Sea. During the fighting, a deep core fissure erupts, flooding a gallery with magma. Many are slain on each side, leaving only a handful of survivors, who each believe the other side has been wiped out. The battle becomes known as "Rockfire".
* Cut off from the route back to mainland Faerûn, the dwarf and drow survivors of the Battle of Rockfire separately journey westward, under the entire ocean. Finally making the surface in Maztica, the dwarves emerge into the harsh desert of the Sands of Itzcala, while the drow arrive to south in the foothills of the Axapoztlan Range.
==Appendix==
===References===
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