On the dungeon preview page they even say.
Karazhan the door is locked.
This is a large dungeon with a raid like feel in which players will want to revisit as they work their way through.
In patch 7 1 the side entrance was re purposed for the return to karazhan dungeon.
When you first enter the dungeon you ll notice that to your left is a locked door that says it requires some rusty keys.
It may be locked to killing curator or nightbane i m not sure.
When climbing the tower to the right of the main entrance across the small creek the stairs lead to a bridge and to a door which can be unlocked from the inside once the opera event has been cleared.
The servant s access door is located on the mezzanine above the ballroom in the karazhan raid instance in world of warcraft.
Karazhan has a side entrance.
There are actually a few doors like this one across the map all blocking a.
Just walk up to the door and it ll unlock and open.
The portal is found when climbing the tower to the right of the main entrance across the small creek the stairs lead to a bridge and to a door which would be unlocked from the inside once the opera event has been cleared.