Mists of Tirna Scithe

Mists of Tirna Scithe is a dungeon in Shadowlands located in Ardenweald. Cursed to exist outside the cycle of Life and Death, the Drust seek to circumvent their fate using Ardenweald's mechanisms of Rebirth. Their would-be conquest has found its way to Tirna Scithe, where Ingra Maloch and his followers use foul magic to subjugate the local inhabitants.

Adventure Guide
''The lush grove called Tirna Scithe has ever been diligently protected by the fae folk, for it is a sacred place said to hold ancient secrets. Legends warn that an unwary traveler might find themselves lost for an eternity wandering its countless mist-shrouded paths. But as drought depletes the forests of Ardenweald, enemies seek to plunder the grove's potent magic. Even the realm's native denizens are driven by hunger and desperation to consume that which the Winter Queen holds most dear.''