The Nautilus was a cave situated on the planet Parnassos, inside the territory belonging to the Scyre warrior clan. Prior to its occupation by the clan, the Nautilus served as the age-old dwelling of a family to which the human female Phasma and her sibling Keldo belonged. The cave was equipped with a skylight, a throne, and functioned as a repository for numerous ancient artifacts. The Scyre held it in great esteem because it provided shelter from the severe environment of Parnassos.