Concept Gallery artwork in Metroid Prime depicts an Engine Room. As no such room appears in the final game, it is likely that this room was scrapped in development. No evidence exists to support the room having survived the concept artwork stage to actual development, as with the Reactor Room. A black and white version of the artwork in the Concept Gallery contains notes heavily implying that this room was meant to appear in the crashed Frigate Orpheon: "Section B2, space pirate galleon wreck, Room 18 pg. 25". There is also the curious presence of a Chozo Artifact symbol on a wall in the room.