Crossway Access South is a room in the Chozo Ruins. It appears in Metroid Prime. It is a narrow, bendy, worn stone passage containing many metal struts and pipes about the walls and ceiling, and a few steam vents. At one point, these create a barrier to anything larger than the Morph Ball, low to the floor. At each end of the room, low down and covered with plant life, is a Morph Ball hole, both connected via a tunnel.