Board Thread:Lore Discussion/@comment-7185849-20130318192711/@comment-9887604-20130618170735

Like Psijic said, I agree if it would happen it would happen outside of any game because they would need to create one solid lore. I really doubt we will see any more along that stories line however. Bethesda likes leaving alot of lore areas like that in the grey areas, I believe they realize the greatest story they can tell is the ones they leave to our imaginations. Then again i may be just giving them too much credit.

Back on to the original topic, I think it would be safe to assume all of Vvardenfell is lost, most of mainland Morrowind has been lost with the exclusion of the arm of which Blacklight is located. All cities that belonged to Telvanni and Dres would have been decimated, so the eastern arm of Morrowind may have also been a particular focus.

This map shows many cities of Morrowind and their particular allegiances. Its an older map but interesting nonetheless

http://www.imperial-library.info/content/morrowind-province-concept-official

An interesting side note is that the Velothi Mountain ranges were littered with Dwemer ruins, some which connected to Skyrim. One could wonder if any Dunmer took refuge in these underground fortresses, and possibly turned them to their advantage.