Aug 15, 2015
ＫＡＲＡＺＨＡＮ ＣＲＹＰＴ ：
Some people speculate that is a lower portion of Karazhan, as some lore indicated Karazhan has a lower half. But the architecture does not seem match with Karazhan in the slightest bit.
Inside the crypts, there's a persistent heartbeat. There are also many subzones such as Tome of the Unrepentant, The Upside-down Sinners, Well of the Forgotten and Pauper's Walk.