Composer's Abyss

The Composer's Abyss is an underground structure on Halo Installation 03 used to store victims digitized by the Composer. Located at the end of the tunnel is a slipspace portal that leads to a Forerunner city.

History
In late 2554 the Composer was removed from Installation 03 and taken to the nearby Ivanoff Station for research by the Office of Naval Intelligence. Sometime after the New Phoenix Incident, monitor 859 Static Carillon attempted to contact Installation 03's monitor, 049 Abject Testament. When a portal opened from Static Carillon's world, leading to the Composer's Abyss, the monitor entered it to investigate Abject Testament's silence. Upon exiting the Abyss, Static Carillon encountered the Ur-Didact, who demanded for the monitor to show him the Abyss' portal.

On July 25, 2557, Spartan Black Team was killed outside the tunnel by the Ur-Didact and his Promethean Knights and Crawlers. Spartan Blue Team was shortly dispatched to the installation, only to discover of Black Team's demise, and soon came across the Composer's Abyss. As they walked down the path inside the tunnel the Spartans discovered composed human essences affixed to the walls of the tunnel, and eventually came across the slipspace portal. The Didact was soon notified by a monitor that the Spartans had found the portal. Upon entering the slipspace portal, they were teleported to the Didact's world.

After engaging the Didact and his Promethean forces at the Composer's Forge, Blue Team returned through the slipspace portal and re-entered the Abyss, while Static Carillon attempted to close the portal behind them. Blue Team made their way through the Composer's Abyss, where they realized that the Didact was moving a Composer into position over the Abyss. When the Spartans exited the Abyss, the Didact attacked them.

List of appearances

 * Halo: Escalation