Spread carnage and corruption!

Clear

Henzell says...

Boring zombies and skeletons slowly replace all of the gravestones over time: once they're all gone, pass through the new door and a few skeletal warriors to find Zonguldrok's tombstone, which then is replaced with an {antique lich} when you go for the loot.

Information based on master branch and the great LearnDB.
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