Korinth Prior system
The Korinth Prior system is a planetary system in a region of space within the Forerunner ecumene. Orbiting a K-type dwarf star, the system was the location of the Etran Harborage, which was the fourth astronomical body in the system.
- Main article: Battle of the Etran Harborage
The UNSC Spirit of Fire followed the Covenant to the system after Professor Ellen Anders had been captured by Arbiter Ripa 'Moramee during the Battle for Arcadia. The shield world was eventually destroyed when the crew of the Spirit of Fire realized that the shield contained ancient Sojourner-class dreadnoughts that the Covenant were trying to use. The crew sacrificed their Slipspace drive to destroy Etran Harborage, resulting in the ship being unable to return to UNSC controlled-space. Instead, the Spirit of Fire became lost in space for over 20 years. Its destruction left a massive debris field forming an accretion disk around the system's star.
- Main article: Mission to the Korinth Prior system
In 2557, the system was also investigated by the ONI Prowler UNSC Taurokado and Fireteam Apollo. Searching the debris field, they confirmed it as the remains of a shield world and also uncovered evidence of the Spirit of Fire. At the same time, it was also visited by a Covenant battle group. On June 21, UNSC AI Turkish generated a report which recommended an asset-denial or counter force operation in the system to deny the Covenant access to any Forerunner technology found there.