Boundary Lithos

This article is about gateway on Genesis. For the gateway on Requiem, see The Gate.

The Lithos on Boundary.

The Boundary Lithos is a Forerunner Lithos on the planet Boundary. It is buried under the township of Tyrrhen. It serves as a link to the Domain.

History

Hunt for the Boundary gateway

Chloe Hall and James Solomon in front of the Lithos on Boundary.

With the Genesis gateway inaccessible, High Lord Dovo Nesto, the leader of the Order of Restoration, instead turned his attention to finding another one of the Lithos' situated across the galaxy. On the shield world Cloister, he was able to acquire a tablet of Forerunner origin with Forerunner glyphs inscribed upon it; when analyzed and translated, these provided Nesto with the location of a new Lithos site - the human colony of Boundary. Nesto manipulated both War Chief Severan of the Banished and Sali 'Nyon, a remnant warlord who had recently rebelled against Jul 'Mdama, into assisting him with this plan, promising both the position of his right-hand once his godhood was attained. Thanks to information recovered from Reach, Nesto knew that the Domain could only be accessed by an individual with an identical neural pattern to Cortana - such as an identical clone of Cortana's original brain donor, Catherine Halsey. Knowing of the existence of such a clone, Chloe Hall, he counted on the UNSC's determination to stop him that would result in them bringing her to the Lithos site.

Information about the Lithos was first made available to the United Nations Space Command in 2559, thanks to the research team operating on Zeta Halo. Some time following Cortana's re-emergence on Zeta Halo, the research team were able to report back to UNSC command noting their knowledge of the Lithos as a series of Domain access nodes spread across the galaxy, similar in nature to the Kamchatka site. However, the team went silent shortly after, with the UNSC unable to ascertain if this information was discovered naturally on the ringworld or after the Created assumed command of the installation. This information was cross-referenced with a number of other Forerunner sites discovered by the Office of Naval Intelligence, though the locations of further Lithos access nodes remained unknown. However, with this information in hand, the UNSC began to look into ways of neutralizing the Domain to ensure that once Cortana was defeated, another individual would not simply assume her mantle as a galactic dictator. This research concluded that the Lithos' were only accessible by an individual with Cortana's neural pattern - something which was available thanks to Chloe Hall. ONI contracted ex-SPARTAN-II James Solomon to kidnap Chloe from her residence on Cascade and bring her to Boundary.

It was through 'Nyon's Covenant by which the Swords of Sanghelios came to learn of the Lithos, having attached a relay mite to a battlecruiser in 'Nyon's service and eavesdropped on their communications. The information they uncovered did not inform the Swords what a Lithos was, but was enough to alert them of the threat and cause them to seek assistance from the UNSC. Shadow of Intent deployed to Venezia alongside a UNSC superheavy cruiser UNSC Victory of Samothrace with the intent of capturing Nesto to interrogate him and find the Lithos' whereabouts. Unfortunately, an intervention by Severan and the Banished meant that this attempt was unsuccessful, though the allied task force succeeded in capturing a Sangheili guard who gave up the Lithos' location on Boundary during his interrogation by Jai-006 and Tul 'Juran. ONI commander Jilan al-Cygni then deployed to Boundary aboard the prowler Akkadian to scan for the Lithos there, while Victory of Samothrace was given command of Battle Group Omega with the goal of doing anything they could to either control, or deny, the Lithos to the enemy. The initial plan was for Akkadian to rendezvous with James Solomon and Chloe Hall and then integrate with the Lithos themselves, granting the UNSC control of the Domain. However, when the Banished fleet retreated from the assault on Earth on December 12, this plan was altered. Victory of Samothrace moved to follow, arriving at Boundary on December 14.

The Banished were able to quickly ascertain that the Boundary Lithos was buried under the township of Tyrrhen and occupied the site, deploying a flame-bore to begin the work of excavating the artifact. They were able to discern the location thanks to a sensor sweep done by Heart of Malice, which detected only one large Forerunner structure on the planet. The excavation was interrupted by the arrival of Battle Group Omega on December 14, which engaged the Banished fleet for a short time before being reinforced by a much larger fleet sent from Earth. The ensuing Battle of Boundary was a massive engagement fought between Severan's Banished fleet and the UNSC, with Sali 'Nyon's armada later arriving in the system. At first the Banished and Covenant held an uneasy alliance, though this quickly broke down once Severan realized that he had been deceived by Dovo Nesto.

Once it became clear the Boundary Lithos would not be feasible for the UNSC to capture, Victory of Samothrace was ordered to conduct an orbital strike on it with its augmented Magnetic Accelerator Cannon, denying the Lithos to both the Banished and the Covenant. Thousands of Banished and Covenant were killed in the strike while the Lithos burst into a pillar of light that tore into the sky. Several dozen ships in orbit were vaporized by the Lithos' destruction while others were severely damaged, either cast adrift or sent on a collision course with the planet's surface. The surviving Banished and Covenant forces subsequently retreated from the planet.

These events were observed by Forthencho using neural transmission before the destruction of the Lithos and the loss of so many minds to connect to caused the Domain to pull him back.

List of appearances

• Halo: Empty Throne (First appearance)