When Patriarch opens the way to the Hall of Echoes for you, he mentions doing the same for Maxos, and implies things didn't go quite according to plan.
From
Looking for Patriarch Conversation Character: Why did Maxos seek to enter the Hall of Echoes?
Patriarch: Knowledge was his answer to that question, power was the truth his eye betrayed. But I opened a gateway for him too, deep beneath the scorched wastelands of Yuthul Gor. He was successful as he almost always was, though now... but that is of no consequence. Nothing humans do really is.
