Eaerlann

Eaerlann was an elven kingdom of wood and moon elves in the High Forest that lasted for around six thousand years. Together with Sharrven it supressed the spread of evil in Silvanuede and maintained the peace. By 882 DR the kingdom was sufficiently weakened by elves having left for Evermeet that it was destroyed by a demonic uprising from Hellgate Keep.

Ecology
The Eaerlann made their homes by hollowing out the trees and connecting them with rope bridges. Because of this, many of their settlements have not withstood the effects of time and are no longer present.