Neltharion's Lair is one of the dungeons introduced with World of Warcraft: Legion. It is home to the Highmountain drogbar, the center of their society, and also contains one of the Pillars of Creation. Due to its name and location, it is likely found within the Lair of the Earth-Warder.
The dungeon is part of Legion's scalable content, meaning the dungeons do not have to be played in level-order.
- ^ BlizzCon 2015 Overview and Content Panel