(Source: Storm King’s Thunder, Page 91)

The High Moor might be the main motivation for the Eldreth Veluuthra, who wishes this kingdom returned and restored to its ‘proper’ form. Of course, they believe that it was the non-elven races that caused this cataclysm (which was lost to history. If you ask me, you can blame a meteorite.) A good number of Eldreth Veluuthra folk till talk of transforming the Moor, which might result in a lot of schemes, several campaign running at once, and a whole lot of dead non-elves.