The MOTHERLODE!![sic] (or "The Motherlode")[2] is a maximum-level dungeon located on the Isle of Kezan. The goblins have heard word of Azerite and its value and have started digging deep into Azeroth to gain more of it. Players will return to Kezan after years away to discover how it's changed.[3]
The Isle of Kezan, rent asunder by the eruption of Mount Kajaro, is now brimming with Azerite in the aftermath of Sargeras' assault on Azeroth. Seeking to make a fortune and stake his claim to the title of Trade Prince, Mogul Razdunk has focused the Venture Company's efforts on weaponizing Azerite and selling it to the highest bidder.
At BlizzCon 2017, it was initially introduced as "the Kezan dungeon". In alpha, it had been changed to The Undermine. Later, a new build changed it to The Motherlode, and finally to The MOTHERLODE!!.
Gallery
Minimap of the MOTHERLODE!! dungeon and the surrounding area.