Kogoruhn was the seat of power of house Dagoth before its fall. The stronghold is surrounded by a few ruined houses in vanilla. I have expanded these ruins so that the area around the stronghold is filled with ruins of a large settlement making the place even more forboding and dangerous than before.
I'm aware that this expansion suggests that the ruins are newer than the lore suggests. Given to the harsh conditions of the ashlands, they would probably have decayed beyond the vanilla ruins. As a lore-fanatic I do understand this issue.
I'm waiting for it to show up on PES. Here are a few screens in the meanwhile:
http://img842.imageshack.us/img842/4746/kogoruhn3.jpg
http://img686.imageshack.us/img686/1184/kogoruhn7.jpg
http://img517.imageshack.us/img517/3424/kogoruhn22.jpg
Feel free to leave feedback.
/ TBT