I saw somewhere on the UESP Wiki that Voryn Dagoth had a Dunmer Stronghold, but it didn't say which one. I looked around for an awnser, but couldn't find anything. So, which one is it? Was it destroyed? What was it's name?

I'm thinking it would possibly be Koghorun (sp?), but I really have no idea. Any awnsers?

Koghrun(sp?) was occupied by sixth house forces and used as an underground tunnel to circumvent the ghostfence during the time of the Nerevarine.

According tohttp://www.uesp.net/wiki/Morrowind:Kogoruhn

"Eleven of these mighty stone edifices are to be found in Morrowind. Ten are connected by Propylon Chambers, if the teleportation index for that chamber can be found. The eleventh, once the stronghold of Lord Voryn Dagoth before he became Dagoth Ur, was lost long ago when House Dagoth fell."

"Kogoruhn is one of the lost halls of House Dagoth. Its Propylon Chamber no longer functions, and long ago, after the fall of House Dagoth, it was taken off the propylon transport route. It lies in ruin, and its location is generally forgotten."