Question: where is mzinchaleft in skyrim?
Answer: Mzinchaleft is a Dwemer Ruin located southwest of Dawnstar and east of Ustengrav. It is involved in a Dark Brotherhood quest, as well as a favor quest for Mjoll the Lioness in Riften. The Gatehouse of Mzinchaleft houses an entrance to Blackreach. It is accessible through the main quest.