Located deep in the Mierani Forest in northwestern Varisia, the ancient elven stronghold of Celwynvian lies fallow and empty, its verdant palaces and delicate spires glimmering in the twilight beneath the canopy. Even during the elves’ long absence following their exodus via the Sovyrian Stone, other races superstitiously avoided the City of Emerald Rains, believing it haunted by the ghosts of the departed elves. Since their return, the elves have mobilized to quarantine the city – supposedly to create a refuge where their kind can enjoy their ancestral home in peace, away from the constant chatter and bustle of the short-lived races.
Those who trade with the elves of the Mierani Forest, however, tell a different story. Among them, it is whispered that the elves’ refusal to allow any non-elf passage into Celwynvian is actually an effort to hide a dangerous and shameful secret. Within the forest’s shadowy borders, they tell, the elves of the Mierani have cordoned off the ancient city and surrounded it, fighting a hidden war to retake it from an unnamed and sinister force.
Sources: Pathfinder Companion Elves of Golarion