Mzuleft

Mzuleft is a large Dwemer ruin located to the southwest of Dagon Fel. The ruin is marked on your world map as Mzuleft Ruin. Orcs have taken up residence in this ruin and will attack you on sight. Edwinna of the Mages Guild will ask you to find some Dwemer Scarab Plans in this ruin. You'll find the plans on a shelf in the first room, along with a Key to Mzuleft.