Cathedral of Darkness is a cathedral located in southwestern Icecrown. The cathedral is filled with Chosen Zealots (who hit hard), and is involved in the quest 
[25-30] Tirion's Gambit. The Lich King makes an appearance during the quest event.
The Cathedral of Darkness
External links
Wowhead - Chosen Zealot - http://www.wowhead.com/?npc=32175
Wowhead - Tirion's Gambit - http://www.wowhead.com/?quest=13403
