Erj was a Breton conjurer and a scholar who was interested in the Dwemer. He is encountered, postmortem, in the Nchuand-Zel Armory. His journal reveals that he was looting the ruins and was planning to buy a castle with the riches he found within.
The Lost Expedition Edit
During the quest The Lost Expedition, the Dragonborn is tasked in restoring the ancient power of Nchuand-Zel, an ancient city buried below Markarth and discover what happened to the missing expedition party that went exploring within the abandoned city.