Board Thread:Lore Discussion/@comment-10362075-20130903195722/@comment-3573184-20130903233122

PsijicThief wrote: So you know for a fact what happened to the Dwemer? Last I checked the true happenings haven't been canonnized of yet. They actually have.

Its was revealed in-game in Morrowind, confirmed in an official Bethesda interview, confirmed by one of the devs, who was in the interview, on the Beth forums, and later re-confirmed in Skyrim.