Krag was a Breton conjurer and a scholar of the Dwemer. His corpse can be found inside the Nchuand-Zel. His journal lies next to him. He went inside with Erj, Stromm and Staubin but all have been killed by the Falmer.
Two corpses of Imperial soldiers can be found next to him.
The Lost Expedition is a quest to restore the ancient power of Nchuand-Zel, an ancient dwemer city, and discover what happened to the missing expedition party that went exploring within the abandoned city. The quest is obtained by reading Alethius's Notes next to his dead body in the Nchuand-Zel Excavation Site.