(Source: Storm King’s Thunder, Page 96)

Micro-Worldbuilding Opportunities: Looking at it on the map, it's a bit too north to be related to the secretive Elven village of Everska. But I just remembered something from an earlier homemade campaign I set near here.

I designed up an ancient kingdom that was lost in a major planeshift, only to have it reappear over a maw that was present in 4th Edition Faerun, north of Parnast. It might not have been part of Ancient Faerun, but it didn't have to be, just have it overlay over some missing part of the realm.

I might bring that idea back, only have it overlay the Lonely Moor.