Only the smaller part of the Null Planet
is exposed to the Dense Dimension.
Ghost, the Sekh, unnamed heroine of The Null Planet is arrested upon her return to the Home World. She is shipped off to a Prison Planet, incarcerated aboard a Skybase operating above the surface of the Metallic Sea where mining is performed on and below the seabed. After an incident in a toilet block, she kills another inmate and is assigned to the dead-heads, a punishment detail working in high-loss hazardous maintenance areas.