When you meet Kahn for a second time in the Infernal Abyss, he will be plastered 
to a metal wall in a small room. Next to him is a small hallway that leads to 
four spawning pits for each Minion and one treasure chest. The treasure chest 
will respawn every eleven seconds after you hit or open it. Note: The Infernal 
Abyss is the fifth and last one.