I searched the forum to see if this was reported before, but I couldn't find anything.
The Bluish Stone you get from Valkoth still implies that Lem and Kaa are in the Eastern and Western Deadlands respectively, speaking of a never-ending spiral into the Earth and long trenches dug out and stretching expansively. Something like that. The quest then interprets it as both being in the Northern Deadlands, by the sea and inland.
It should probably say something like:
"Looking into this small, smooth stone, you see shifting images of polluted waves crashing against a Blighted shoreline, and of an expansive blackened plain fading into snow in the distance."
(And I'd be fine of those exact words were used)
Got it