It seems no one has really actually thought through a Dwemer related DLC properly. A questline where you unravel the mysteries of the Dwemer's mysterious disappearance. Along the way you discover the last civilization of Dwemer in an undiscovered "ruin". To start the questline, you must read the book: The Mystery of the Dwemer. When you finish reading the book, the quest "Long Lost Race" begins. Then in your quest journal it says. " I read the book, "The Mystery of the Dwemer", and I was intruiged how mysterious the dissappearance of the Dwemer was... I have to look into the ruins of Mzjunzel and look around for clues of how the great race of the Dwemer dissappeared. " Then you look into the ruin, fighting off Falmer, Chaurus and Dwarven contructs alike! When you get to the Mzjunzel Library, you find a Journal, you read it, it explains what happened to the Dwemer, and why they have all dissappeared. And it mentions a civilization, deeper down then Blackreach, then the quest ends and the next one begins. Now, a courier delivers a letter to you from Calcelmo saying: "I have heard you have recently explored the ruins of Mzjunzel. If you could please come visit me in Markarth". When you travel to Markarth, you speak to Calcelmo, he will ask if you have anything on the Dwemer. You show him the Journal. Then he reads it, and he asks you to come with him, and you follow him to his Labatory. He speaks more, and you recieve the next mission. He explains that there is a secret enterance in Blackreach, that the Falmer couldn't find. So he sends you to Blackreach, when you arrive in Blackreach, you need to fight a few Falmer and some Chaurus. As you explore, you find a book. An Adventurer's body lies next to it. You read it, and it tells you the exact location of the hidden city called Azuljundzel. You walk through a waterfall and find a door with a friendly Dwarven Construct standing outside, it asks you this question. "What is the speciality of the Dwemer?" And you answer with: "Engineering." or "Making the Falmer blind?" or "Engineering and Craftmanship". One of these answers make the Construct say "Welcome home". And the Construct opens the door, and you walk inside and go down the lift, the dwarven door locks itself behind you. Now... The rest.. I'm leaving to your imagination to figure out, comment below and tell me what your ideas are for the rest of the questline. These are just ideas. Please do not hate me for this forum...