“I could have sworn I remember standing before a gate in Azshara and wondered what was on the other side”: behind it lies a great furbolg city. Its inhabitants are struggling to stave off some kind of corruption. The hold's tunnels run deep into the mountain and, if you follow them, lead to a very different danger: the Barrow Deeps raid.
Blizzard hasn't published the bosses yet. We'll add them as soon as they're known (the beta starts on September 17).