Seoba Ice Quarry

The Seoba Ice Quarry was a large abandoned ice quarry on Seoba, the third moon of Biko. In March 2526, it was the site of a heated battle between the UNSC Navy and Insurrectionist forces.

Colonization of Biko
Prior to 2424, human colonists established the quarry to mine ice that would be sent to Biko via mass driver. Built on the side of a mountain, the mass driver facility would launch thousand-ton payloads of steel-encapsulated ice into the planet's exosphere. Here, the capsules were intercepted by their purchasers, then guided into the stratosphere and attached to a dirigible so they could be floated gently to their final destination. By 2424, the terraforming process had finally paid off and Biko had developed a climate humid enough to generate its own rain. As such, both the mass driver and the quarry were decommissioned and abandoned.

Insurrection
In early 2526, the Biko Independence Army planned to overthrow Biko's government in preparation for the Covenant's impending arrival at the colony. This ice quarry was chosen as a suitable staging ground for the coup. However, the UNSC's Task Force Yama had also selected the quarry as their own staging ground for a daring operation to board Covenant warships and destroy them from the inside using nuclear weapons. On March 18, 2526, Task Force Yama arrived and planned to practice the mass deployment of their 21st Space Assault Battalion ODSTs and Spartans. Operation: ICE DANCE quickly became a warzone when the prowlers detected the insurgents hidden amidst the ice.

As the prowlers dropped off their complement, the entrenched insurrectionists tore the ODSTs to shreds with their M41 Vulcans. Meanwhile, a strike managed to damage the insurgents' communications relay that sat atop the quarry, preventing them from calling for help. In the chaos, John-117 disobeyed orders and leapt from the to face the insurgents head-on, with the rest of Blue Team following his lead. Using his rocket launcher, John pulverized two nearby gun bunkers that had been carved into the ice. At the quarry's frozen dockyards, Blue Team rendezvoused with Lieutenant Nelly Hamm and Captain Zelos Cuvier of the Black Daggers. Here, they formulated a plan to destroy an insurgent Civet convoy slowly climbing the quarry's steep slope to repair the communications relay. Another airstrike was out of the question as the had been lost on the previous run and Lieutenant Commander Hector Nyeto did not wish to risk another vessel. To stealthily cover the five kilometers up the slope to the relay before the convoy, the Spartans would use their thruster packs, flamethrowers, and C-7 foaming explosive to ascend the derelict mass driver's ice-covered acceleration tube. They went forward with the plan, having Linda-058 stay back to cover them with her MA5B assault rifle to watch for any hint that the insurrectionists had discovered what they were doing. John led the way, with Frederic-104 and then Kelly-087 trailing behind. Ultimately, the insurgents had realized their plan, distracting them enough so that Nyeto could deploy more of Hamm's forces ahead of the convoy. By the time the Spartans emerged from the accelerator tube, the convoy had been destroyed and the relay rigged to explode.

The day after, UNSC forces repurposed the quarry's abandoned Assembly Chamber 4L430 for an informal debriefing led by Captain Halima Ascot, the commander of Task Force Yama. A UNSC flag was hung on the chamber's polycrete-coated walls, with portable standing lights and a folding conference table also set up for the debriefing.

Along with Captain Ascot, the meeting included Colonel Marmon Crowther, Lieutenant Commander Hector Nyeto, now-Captain Nelly Hamm, Staff Sergeant Avery Johnson, SPARTAN-II John-117, and Dr. Catherine Halsey. Here, they discussed the difficulties with the previous day's battle. After John's maverick action was brought up, the discussion soon turned to the young Spartan's true age. Ultimately, the truth came out that John and his fellow Spartans were all around the age of fifteen, and Colonel Crowther refused to send them into battle again as a result. The conversation then turned to why the Insurrectionists had seemingly been ready for their arrival, with John realizing and convincing the others that they had instead been waiting for the Covenant, with the intent to meet them for negotiations. While they were planning for the Covenant's inevitable arrival, a flotilla of the alien ships appeared in-system and set course for Seoba. The UNSC leaders then rushed out of the chamber to ready their forces for the imminent continuation of the battle. Crowther, however, stayed behind to give John-117 his new orders. He and his comrades would be guard the captured rebels and prepare them for transport back to Biko.

Arrival of the Covenant
With an estimated ten minutes before the flotilla arrived at Seoba, John-117 and his fellow Spartans were busy in Subsurface Maintenance Grotto 6M430 loading the 300 insurrectionist prisoners onto a captured. As the mass of people were urged up the vessel's loading ramp, John noticed a group of insurgents trying to hide the presence of one who was clearly an officer. John knew that the Office of Naval Intelligence would want to interrogate any high-ranking members of the United Rebel Front, so he ordered the prisoners to halt. Using his MJOLNIR's onboard computer, he checked the identity of the individual, who turned out to be General Harper Garvin, and called him forward. After a failed attempt by the Gao insurrenctionist Petora Zoyas to stall for him, Garvin complied. While the prisoners resumed boarding, Garvin attempted to work some details about the Spartans out of John, who was busy listening Task Force Yama's command channel.

Captain Ascot had directed the prowlers of Task Force Yama to launch immediately once loaded with members of the Black Daggers. Despite his ship's sensors being unable to detect the human stealth vessels, First Blade Tel 'Szatulai of the Bloodstar Flotilla witnessed the task force launching from the quarry, ordering the intrusion corvettes to fire on their point of origin. He hoped to cripple one of the vessels so that it could be recovered and studied. One of the last prowlers to launch, the, Ascot's vessel and the flagship of the task force, was hit by the plasma bombardment. It crashed into the quarry could not be raised on comms. The bombardment began to shake the grotto, injuring some prisoners with falling chunks of ice. John ordered the rest to carry their wounded into the transport, warning that anyone who delayed would die in the quarry.

As he continued to listen to the command channel, John could tell that Crowther would be unable to send any of his men to the Starry Night ' s crash site, and that he did not want to risk another prowler to investigate either. Refusing to give up on Captain Ascot and her crew, or allow the Covenant access to a prowler, John decided that he and his teammates would go after the Starry Night instead. After telling Garvin to rejoin his people, he informed the pilot of the transport that she and her flight crew would be leaving without them. When the pilot protested to launching without the Spartans to watch the prisoners, John rebuked her and reminded her to follow flight deck isolation protocols. With that, the Spartans left the grotto and the transport launched shortly after.

Topography
The ice quarry's main pit was over ten kilometers in diameter and shaped roughly like an octopus, with multiple long curving canyons radiating from the central cavity. The walls of the cavity were pocked with oddly shaped cave entrances of varying sizes.

Locations

 * Assembly Chamber 4L430
 * Subsurface Maintenance Grotto 6M430

List of appearances

 * Halo: Silent Storm