Lion's Gate Spaceport
Located near the Lion's Gate, which connects the Inner and Outer Palace complexes, the Lion's Gate Spaceport is the greatest transportation facility on the Throneworld. A massive structure, the Lion's Gate Spaceport goes into the upper atmosphere of Terra and contained an immense number of docking yards and space elevators capable of receiving even a Gloriana Class Battleship.[3b] The outer portion of each layer of the Spaceport, up to about a kilometer deep, were called the skin; this gave way to the mantlezone around the innermost ten kilometers, which itself was known as the core wards, or just the core.
During the Siege of Terra the Lion's Gate and its adjacent Spaceport were the most heavily defended locations of the Imperial Palace.[3a] Its defenses included over 18,000 Imperial Fists and 800,000 Imperial Army troops under the command of Fafnir Rann. Despite this, during the siege it fell to a combined assault led by Kroeger, Abaddon, Kharn, and Perturabo.[5a] However, later the Spaceport was reclaimed by the White Scars and 1st Terran Tank Division of the Imperial Army in a daring raid led by Jaghatai Khan. Today, the facility is still in use.
- Tropophex: The lowest level, which led to a series of bridges which led to both the Outer Palace and the Lion's Gate. This level was the most populous and had the bulk of landing pads.
- Stratophex: The middle level, which contained an conglomeration of Servitor and port laborer facilities and crane complexes known as Sky City. The Stratophex controlled access between the lower and upper levels.
- Mesophex: The highest level, known as the Star Spear. It soared over six successively narrower towers, and then broadened to a twelve kilometer wide landing pad at its summit. At this level atmospheric pressure was non-existent, allowing for spacecraft to touch down and load directly into immense conveyor shafts. These were attached to gigantic space elevators, allowing for the quick moving of cargo down to the surface.
- 1: Siege of Terra: The First Wall (Last accessed 10/25/2019)
- 2: Codex: Adeptus Custodes (8th Edition), pg. 17
- 3: The Lost and the Damned (Novel)
- 4: Index Astartes IV - Siege of the Emperor's Palace
- 5: The First Wall (Novel) Chapter 4
- 5a: Chapter 32