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{{Era|Forerunner|HCW}}
{{Status|Canon}}
[[File:H2 Containment Shield.jpg|300px|thumb|right|A [[Type-52 Troop Carrier|Phantom]] approaching the Sentinel wall, with the [[Library]] in the background.]]
[[File:H2A - Library.jpg|thumb|300px|A Sentinel wall, with the Library in the background.]]


'''Sentinel walls'''<ref name="h2firstlook">[[Halo_2_Collector's_Edition#Collector.27s_Edition_DVD|'''Halo 2''': ''First Look'']]</ref> are massive walls on [[Halo Array|Halo installations]] intended to serve as means of containment if primary measures fail in the event of a severe [[Flood]] outbreak. As their name suggests, the walls house numerous [[Sentinel]]s to both repair the facility and keep the Flood from spreading beyond the wall. A Sentinel wall surrounded the [[Quarantine Zone]] around the [[Library]] of [[Installation 05]] to keep the Flood from spreading.<ref name="icon">'''Halo 2''', campaign level ''[[Sacred Icon]]''</ref>
'''Sentinel walls''',{{Ref/Game|Id=h2firstlook|H2|[[Halo 2 Collector's Edition#Collector.27s Edition DVD|Collector's Edition: First Look]]}}{{Ref/Book|AoH|Page=91}} also known as '''quarantine walls''',{{Ref/Book|Enc22|Page=337}} are massive walls on [[Halo Array|Halo installations]] intended to serve as means of containment if primary measures fail in the event of a severe [[Flood]] outbreak. As their name suggests, the walls house numerous [[Sentinel]]s to both repair the facility and keep the Flood from spreading beyond the wall; they also serve the function of generating an [[Containment shield|energy barrier]] around the Library. A Sentinel wall surrounded the [[Quarantine zone (location)|Quarantine zone]] around the [[Library]] of [[Installation 05]] to keep the Flood from spreading.{{Ref/Level|Id=icon|H2|Sacred Icon}}


== Background ==
== Function ==
The wall appears to have been designed to keep the outbreak of Flood around Delta Halo's Library contained within the Quarantine Zone. It is honeycombed with tunnels for the [[Sentinel]]s to travel through. Sentinels and [[Enforcer]]s keep the Flood contained, while [[Constructor]]s keep repairing the damage that the Flood inflict on the wall. In addition to the massive physical wall, the Sentinel Wall also projected an energy barrier known as a [[Containment Shield]].<ref name="icon"/>
The wall appears to have been designed to keep the outbreak of Flood around Delta Halo's Library contained within the Quarantine Zone. It is honeycombed with tunnels for the [[Sentinel]]s to travel through. Sentinels and [[Enforcer]]s keep the Flood contained, while [[Constructor]]s keep repairing the damage that the Flood inflict on the wall. In addition to the massive physical wall, the Sentinel Wall also projected an energy barrier known as the [[containment shield]]. This shield could only be deactivated from a console deep within the wall's interior, locked in place by a series of [[plug lock]]s.{{Ref/Reuse|icon}}


== History ==
=== Battle of Installation 05 ===
=== Battle of Installation 05 ===
{{Main|Battle of Installation 05}}
{{Main|Battle of Installation 05}}
Despite the efforts of the robotic keepers, the Flood were released when [[Thel 'Vadam|the Arbiter]] penetrated the defenses and deactivated the containment shield around the wall. During the battle on Installation 05 the Arbiter was sent into the wall to deactivate the shields keeping the [[Flood]] in the Quarantine Zone in order to let other [[Covenant]] forces fly over the wall towards the Library.<ref name="icon"/>
At some point, a containment failure on Installation 05 led to a [[Flood]] outbreak in the region surrounding the Library. A series of defensive barriers were activated in order to confine the Flood;{{Ref/Book|Enc22|Page=346}} this presumably led to the sentinel wall's containment shield being activated. During the battle on Installation 05, [[Thel 'Vadam|the Arbiter]] was sent into the wall to deactivate the shields keeping the Flood in the quarantine Zone in order to allow other [[Covenant]] forces fly over the wall towards the Library. Despite the efforts of the robotic keepers, the Flood were released when the Arbiter penetrated the defenses and deactivated the containment shield around the wall.{{Ref/Reuse|icon}}


== Trivia ==
== Production notes ==
*A section of the Sentinel Wall is clearly visible on the ''[[Halo 2]]'' campaign levels [[Delta Halo (level)|Delta Halo]] and [[Regret (level)|Regret]], as well as the multiplayer map [[Containment]]. The Sentinel Wall can be visible and seen ''beyond'' the [[Prophet of Regret]]'s [[Temple (Installation 05)|Forerunner temple]] on the level Regret, denoting its massive structure and size.
A section of the sentinel wall is clearly visible on the ''[[Halo 2]]'' campaign levels [[Delta Halo]] and [[Regret (Halo 2 level)|Regret]], as well as the multiplayer map [[Containment]]. On the level Regret, the sentinel wall can be visible and seen ''beyond'' the [[Prophet of Regret]]'s [[Temple (Installation 05)|Forerunner temple]], denoting its massive structure and size.
*It is unknown whether the other Halo installations have this feature, as the player would have bypassed the wall due to the Monitor's use of the [[teleportation grid]] on [[Installation 04]].


== Gallery ==
== Gallery ==
<gallery>
<gallery>
File:Nwh2mp.jpg|A [[Containment|small section]] of [[Installation 05]]'s Sentinel Wall.
File:H2 Containment Shield.jpg|A {{Pattern|Kez'katu|Phantom}} approaching the Sentinel wall, with the [[Library]] in the background in ''[[Halo 2]]''.
File:Library.jpg|A sentinel wall surrounding a Library and [[Forerunner dreadnought]]s.
File:H2_SacredIcon_EnergyAlley.jpg|A portion of the interior of [[Installation 05]]'s sentinel wall in ''Halo 2''.
File:Ark wall 1.jpg|A smaller Forerunner wall surrounding [[Installation 00|the Ark]]'s [[Cartographer]].
File:H2_SacredIcon_ReleaseChamber.jpg|The chamber housing the [[containment shield]]'s controls in ''Halo 2''.
File:H2_-_SentinelWall_below.png|A section of Delta Halo's sentinel wall seen from the ground level in ''Halo 2''.
File:HTMCC-H2 SentinelWallDeactivates.png|The sentinel wall's containment shield deactivates in ''Halo 2''.
File:H2 Wall Shield.png|Close up of the sentinel wall's containment shield in ''Halo 2''.
File:H2_Containment_Overhead.jpg|A [[Containment|small section]] of Installation 05's sentinel wall in ''Halo 2''.
File:Ark wall 1.jpg|A smaller Forerunner wall surrounding [[Installation 00|the Ark]]'s [[Cartographer]] in ''Halo 3''.
File:Library.jpg|A sentinel wall surrounding a Library and [[Forerunner dreadnought]]s in ''[[Origins]]'' from ''[[Halo Legends]]''.
File:H2A-Library-Wall.jpg|The sentinel wall around the Library in ''[[Halo 2: Anniversary]]''.
</gallery>
</gallery>


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*''[[Halo Legends]]''
*''[[Halo Legends]]''
**''[[Origins]]''
**''[[Origins]]''
*''[[Halo 2: Anniversary]]''


== Sources ==
== Sources ==
<references/>
{{Ref/Sources}}


{{Forerunner|sentinel}}
{{Forerunner|sentinel}}
[[Category:Installation 05]]
[[Category:Installation 05 locations]]
[[Category:Forerunner buildings]]
[[Category:Forerunner buildings]]

Latest revision as of 04:56, February 5, 2024

A Sentinel wall, with the Library in the background.

Sentinel walls,[1][2] also known as quarantine walls,[3] are massive walls on Halo installations intended to serve as means of containment if primary measures fail in the event of a severe Flood outbreak. As their name suggests, the walls house numerous Sentinels to both repair the facility and keep the Flood from spreading beyond the wall; they also serve the function of generating an energy barrier around the Library. A Sentinel wall surrounded the Quarantine zone around the Library of Installation 05 to keep the Flood from spreading.[4]

Function[edit]

The wall appears to have been designed to keep the outbreak of Flood around Delta Halo's Library contained within the Quarantine Zone. It is honeycombed with tunnels for the Sentinels to travel through. Sentinels and Enforcers keep the Flood contained, while Constructors keep repairing the damage that the Flood inflict on the wall. In addition to the massive physical wall, the Sentinel Wall also projected an energy barrier known as the containment shield. This shield could only be deactivated from a console deep within the wall's interior, locked in place by a series of plug locks.[4]

History[edit]

Battle of Installation 05[edit]

Main article: Battle of Installation 05

At some point, a containment failure on Installation 05 led to a Flood outbreak in the region surrounding the Library. A series of defensive barriers were activated in order to confine the Flood;[5] this presumably led to the sentinel wall's containment shield being activated. During the battle on Installation 05, the Arbiter was sent into the wall to deactivate the shields keeping the Flood in the quarantine Zone in order to allow other Covenant forces fly over the wall towards the Library. Despite the efforts of the robotic keepers, the Flood were released when the Arbiter penetrated the defenses and deactivated the containment shield around the wall.[4]

Production notes[edit]

A section of the sentinel wall is clearly visible on the Halo 2 campaign levels Delta Halo and Regret, as well as the multiplayer map Containment. On the level Regret, the sentinel wall can be visible and seen beyond the Prophet of Regret's Forerunner temple, denoting its massive structure and size.

Gallery[edit]

List of appearances[edit]

Sources[edit]

  1. ^ Halo 2, Collector's Edition: First Look
  2. ^ The Art of Halo, page 91
  3. ^ Halo Encyclopedia (2022 edition), page 337
  4. ^ a b c Halo 2, campaign level Sacred Icon
  5. ^ Halo Encyclopedia (2022 edition), page 346

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