The Emerald Circle are a largely autonomous branch of the Cenarion Circle working specifically to undo the corruption in Felwood. They are stationed at the Emerald Sanctuary in southern Felwood. After the Shattering, the Emerald Circle also expanded to Whisperwind Grove in northern Felwood, which they managed to purify from corruption and which is now used as their main base of operations. It has also been infiltrated by several demonic imposters, including the leader Arch Druid Navarax and the druids at Jadefire Run.
The druids of the Emerald Circle manipulated the fel energy within the [Impeccable Fel Essence] stone to enhance their attunement with the wild.