Trial of Shadow.
The Trial of Shadow[31.18, 26.73] is a subzone of Azshara where the Image of Archmage Xylem gives the quest 
[5-30] The Trial of Shadow and where the player can complete the achievement 
[Glutton for Shadowy Punishment].
Patch changes
Patch 4.0.3a (2010-11-23): Added.
