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{{Era|Forerunner}}
{{Status|Canon}}
{{Disambig header|the artifacts|the novel|Halo: Cryptum}}
{{Disambig header|the artifacts|the novel|Halo: Cryptum}}
'''Cryptums''', or '''Warrior Keeps''', were [[Forerunner]] objects created by the [[Promethean]]s. A Cryptum was a sealed capsule where a high-ranking [[Warrior-Servant]] would enter self-imposed exile as punishment for failure or dishonor, involving a state of meditative hibernation known as "timeless [[xankara]]". During this time, the Forerunner would become unaware of the physical world around him, and could remain in a state of suspended animation for thousands of years. Cryptums required an extraordinary amount of force to breach once sealed. They denied access to every species except Forerunners.
[[File:Halo 5 - Cryptum.jpg|thumb|250px|A Cryptum on [[Genesis]]]]
A '''Cryptum''' was a stasis chamber used as a means of exile by the [[Forerunner]]s. Cryptums were most prominently known for their use by the [[Promethean]]s, the Forerunners' highest class of [[Warrior-Servant]]s, who also termed them as '''Warrior Keeps'''.{{Ref/Book|Id=evg|H4EVG|Page=131}}{{Ref/Site|Id=CryptumGlossary|URL=http://halo.xbox.com/en-us/intel/related/text/cryptum-glossary/62e29c59-a3f9-4b63-af76-def71fda5459|Site=Halo Waypoint|Page=Cryptum Glossary|D=14|M=03|Y=2014|LocalArchive=Halo: Cryptum/Glossary}}


==Background==
==Background==
While the Cryptum preserved the consciousness of the Forerunner inside for an indefinite period, the Forerunner's physical body would still deteriorate, albeit at a significantly reduced rate, in a process similar to natural mummification. The body would shrivel and lose most of its fluids. Once the Forerunner was removed from the Cryptum, the body would be placed in a restorative bath, and the body's supply of electrolytes, nutrients and other essentials was thereby replenished. The body's muscle structure would then be regenerated, a process requiring several days.
[[File:H4-DidactPrometheanCryptum.png|thumb|left|250px|The Ur-Didact's combat Cryptum.]]
A Cryptum is a sealed capsule where a high-ranking Forerunner would enter self-imposed exile, often as punishment for failure or dishonor; it was known to be used by those in power as a means with which to silence respected individuals whose punishment otherwise might prove problematic in the eyes of the public. However, some Forerunners occasionally entered a Cryptum voluntarily, in pursuit of a higher state of awareness.{{Ref/Novel|Cry|Page=66}} When in use, a Cryptum's occupant would enter a timeless state of meditative hibernation known as ''[[xankara]]''.{{Ref/Novel|Id=c63|Cry|Page=63}} In this state, the Forerunner's mind would be wholly immersed in the [[Domain]] and they would be able to explore the immense stores of information contained therein.{{Ref/Novel|Sil|Page=255}} The Forerunner would become unaware of the physical world around them, and could remain in a state of suspended animation for thousands of years.{{Ref/Reuse|c63}} In this state, the Forerunner's aging process would be slowed to a near halt, causing them to barely age even after a hundred thousand years in a Cryptum.{{Ref/Novel|Id=Epi9|Epi|9}}


The nature of a Cryptum was unknown to most Forerunners, including [[Bornstellar Makes Eternal Lasting]]. However, he was aware that the violation of a Cryptum invoked dire consequences, one of which was angering the powerful Prometheans.<ref>'''[[Halo: Cryptum]]''', "Chapter 2"</ref>
Cryptums required an extraordinary amount of force to breach once sealed. They denied access to every species except Forerunners;{{Ref/Novel|Id=c61|Cry|Page=61}} however, after being designated as [[Reclaimer]]s, [[human]]s have been shown to be capable of unsealing Cryptums.{{Ref/Game|Id=halo 4|H4}} The nature of a Cryptum was unknown to most Forerunners, including [[IsoDidact|Bornstellar Makes Eternal Lasting]]. However, he was aware that the violation of a Cryptum invoked dire consequences, one of which was angering the powerful [[Promethean]]s.{{Ref/Novel|Cry|Page=54}}


A Cryptum was discovered in [[Djamonkin Crater]] by the young Forerunner Bornstellar Makes Eternal Lasting, containing the meditating [[The Didact|Didact]].
Although Cryptums were often associated with the Prometheans, Forerunners of most [[rate]]s could choose to enter one.{{Ref/Reuse|evg}} The Forerunner scholar known as [[Boundless]], a member of the long-defunct rate of [[Rate#Theoreticals|Theoreticals]], was forced to enter a Cryptum after continuing her studies on Forerunner origins and [[Path Kethona]] in defiance of Warrior orders. After being opened a thousand years later, it was discovered that the Cryptum had been faulty, likely due to sabotage, and Boundless had died inside.{{Ref/Novel|Id=sil|Sil|Page=67-68}}
 
Due to their sacred nature—specifically the involvement of the Domain—a Forerunner's entry into a Cryptum was traditionally a highly ritualistic process, overseen and guided by an associate of [[Haruspis]]. The associate would remove the would-be exile's [[Forerunner personal armor|armor]] and administer them gradual doses of a chemical known as ''inchukoa'', which caused the body to shed most of its fluids via heavy sweating, initially dried and cleaned by the Forerunner's aides and attendant [[monitor]]s. The Forerunner, rapidly desiccating and losing consciousness, would then be carried to a chamber housing the Cryptum. Only biological beings were allowed to be present in this stage; no [[artificial intelligence]]s were permitted. The Haruspis' associate would chant words in middle [[Digon]] to aid the Forerunner's passage into the alternate state of consciousness. With the Forerunner almost completely mummified and unconscious, they were delivered into the Cryptum.{{Ref/Novel|Id=s50|Sil|Page=50-55}}
 
Combat Cryptum are also an integral part of the {{Class|Despair|fighter}}, putting the operator in a subdued, trance-like focus-state, and using their neural activity to process all combat data the ''Despair''-class fighter receives.{{Ref/Book|Id=Enc22|Enc22|Page=389}}
 
==Known Cryptums==
Three known Cryptums have been described in detail; these differ from one another in a number of respects.
 
===Djamonkin Crater===
A Cryptum was discovered in [[Djamonkin Crater]] on [[Earth|Erde-Tyrene]] by the young Forerunner [[IsoDidact|Bornstellar Makes Eternal Lasting]], containing the meditating [[Ur-Didact|Didact]]. The Cryptum vessel, colored copper and steel, was ovoid-shaped, over ten meters high and at least as wide. The millennial seal of the Cryptum was said to be reinforced by two forces; the "wisdom of Harbou" and the "strength of Lang".{{Ref/Reuse|c61}}{{Ref/Reuse|CryptumGlossary}} When the millennial seal was breached, the Cryptum emitted an intense flash of blue light, causing anyone in the vicinity to feel as if time had been suspended; this effect would last for several hours. As the Cryptum opened, it parted outward in three sections above the middle, revealing its meditating occupant inside.{{Ref/Novel|Cry|Page=62-64}}
 
While the Cryptum preserved the consciousness of the Forerunner inside for an indefinite period, the occupant's physical body would be maintained in a vitrified state, lacking most of its fluids. The desiccation process was conducted prior to entry in a Cryptum by ingesting ''inchukoa''.{{Ref/Reuse|s50}} Once the Forerunner was removed from the Cryptum, the body would be administered an initial supply of electrolytes, nutrients and other essential substances and then placed in a restorative bath where it would continue its recovery. The body's muscle structure would then be regenerated, a process requiring several days.
 
===Requiem===
The [[Ur-Didact]]'s flagship, ''[[Mantle's Approach]]'', was equipped with a personal "combat Cryptum",{{Ref/Novel|Sil|Page=292}} which possessed many capabilities beyond the conventional one he used during his first exile. The Librarian sealed the Ur-Didact in this Cryptum, which was discovered over 100,000 years later by [[John-117]] and the [[AI]] [[Cortana]] on the Forerunner [[shield world]] [[Requiem]]. This Cryptum was spherical in shape, with a black outer casing broken by a pattern of angular, orange-glowing "cracks" of [[hard light]] bonding. The combat Cryptum had a horizontal diameter of 86.1 meters (282.5&nbsp;ft) and a height of 85.9 meters (281.7&nbsp;ft).{{Ref/Reuse|evg}} Notably, this Cryptum locked its occupant in contained [[slipspace bubble|slipspace stasis]], shielding the Didact from the effects of the [[Halo Array]].<ref name="Bulletin924">[https://blogs.halowaypoint.com/en-us/blogs/headlines/posts/the-halo-bulletin-9-24-14 ''Halo Waypoint'' - ''The Halo Bulletin: 9.24.14'']</ref> It also slowed the Didact's aging to a near halt.{{Ref/Reuse|Epi9}}
 
Unlike the one discovered by Bornstellar, this Cryptum had not withered the user, as the Ur-Didact remained as physically fit as he had been when he entered; it is unknown if this was the work of the Cryptum itself or the fact that the Ur-Didact wore his [[Forerunner personal armor|personal armor]] during hibernation. The Librarian had sealed the Didact in this Cryptum in hopes that long exposure to the Domain and meditation on his choices would help amend his motives and heal his mind, which had been severely damaged by his traumatizing encounter with the [[Gravemind]]. However, the Domain was later revealed to be of [[Precursor]] origin, its neuro-physical construction being obliterated upon activation of the Halo Array. This unfortunate reality resulted in the imprisonment of the Didact's consciousness as well. Trapped in total silence and darkness, the Didact would experience nothing but his own festering rage and madness for eons. Prior to his eventual release, the Didact also appeared to be awake in the Cryptum to some degree, since he was able to perform covert tasks like hinder use of a [[Cartographer]]{{Ref/Level|H4|[[Requiem (level)|Requiem]]}} and manipulate radio transmissions.{{Ref/Level|H4|[[Forerunner (level)|Forerunner]]}}
 
As a combat Cryptum, this Cryptum doubled as a means of transport, being able to travel at massive speeds or even through [[slipspace]] if necessary, as demonstrated when the Ur-Didact escaped [[Core of Requiem|Requiem's core]] in his Cryptum via a slipspace rift. It also had the capability to scan its surrounding environment or data networks in order to gather information. However, it had no weapons and was vulnerable to UNSC ones such as [[Magnetic Accelerator Cannon|MACs]] and missiles.{{Ref/Level|H4|[[Infinity (level)|Infinity]]}} This Cryptum was destroyed when the Master Chief detonated a [[HAVOK tactical nuclear weapon]] inside the Ur-Didact's flagship, ''[[Mantle's Approach]]'', which it had joined with.{{Ref/Level|H4|[[Midnight]]}}
 
===Genesis===
[[File:Halo 5 Cryptum.png|thumb|250px|The Cryptum located on [[Genesis]].]]
Located on the [[Builder]] world of [[Genesis]], this Cryptum resembled the Didact's combat Cryptum. In [[2558]], [[Cortana]] used this Cryptum to imprison [[Blue Team]], intending to wake them up in 10,000 years in order to show them the utopia she had created. Similar to the Didact's Cryptum on Requiem, the Cryptum on Genesis did not require the mummification of the occupants necessitated by the Didact's older Cryptum, as Blue Team were placed into, and emerged from, the Cryptum fully conscious and clad in their [[MJOLNIR Powered Assault Armor|Mjolnir armor]]. [[Fireteam Osiris]], who were on the planet at the time, attempted to rescue Blue Team from the Cryptum. Though they nearly succeeded with the help of Genesis' [[Monitor]] [[031 Exuberant Witness]], Cortana had a [[Guardian]] grab it and attempted to flee the planet with it. At the last minute, Osiris managed to restore control of Genesis to Exuberant Witness who sent a swarm of [[Constructor]]s to steal the Cryptum from Cortana's Guardian. The Constructors were then able to cut the Cryptum open and release Blue Team unharmed.{{Ref/Level|H5|[[Guardians]]}}{{Ref/Level|H5|[[The Breaking]]}} They were aided by the digitized consciousness of the [[Ur-Didact]] who weakened the Guardian's tether by squeezing on the fiber relay of the hardlight grappling code.{{Ref/Novel|Id=Epi16|Epi|16}}
 
===Bastion===
In late [[2558]], [[343 Guilty Spark]] discovered that, amongst the [[Librarian]]'s topics of study in her secret laboratory at [[Bastion]] was working Cryptums.{{Ref/Novel|PoL|Chapter=Epilogue}}


==Trivia==
==Trivia==
The millennial seal on the Didact's Cryptum was sealed by two forces known as "The [[Wisdom of Harbou]]" and "[[Strength of Lang]]". Who or what Harbou and Lang were is unknown. However, they appear to be a reference to the German actress and author [[Wikipedia:Thea von Harbou|Thea von Harbou]] and the film producer and screenwriter [[Wikipedia:Fritz Lang|Fritz Lang]], who were married and made several films together.
*The millennial seal on the Didact's Cryptum placed on Earth was sealed by two forces known as the "wisdom of Harbou" and "strength of Lang".{{Ref/Reuse|c61}} The names appear to be a reference to the German actress and author [[Wikipedia:Thea von Harbou|Thea von Harbou]] and the film producer and screenwriter [[Wikipedia:Fritz Lang|Fritz Lang]], who were married and made several films together. Fictionally, these seemingly out-of-place names may be explained as a quirk of the AI-assisted translation software—which often replaces the original Forerunner proper names with contextually similar Earth names—used to decipher the in-universe documents that comprise ''[[The Forerunner Saga]]''.
*[[Series 4: Reclaimer]]'s logo in the ''[[Halo: The Master Chief Collection|The Master Chief Collection]]'' is a stylised representation of the Ur-Didact's Cryptum.
 
==Gallery==
<gallery>
File:H4-Cryptum.jpg|John-117 facing the Ur-Didact's Cryptum.
File:H4-PrometheanCryptum-ScanRender.png|Angled view of the Ur-Didact's Cryptum.
File:HTMCC-H4 RequiemCoreCryptum.png|The Ur-Didact's Cryptum in the core of [[Requiem]].
File:H4-Cryptum-Hover.jpg|The Cryptum hovering in place prior to opening.
File:H4-Cryptum-Opening.jpg|The Cryptum preparing to open up and disgorge the Ur-Didact.
File:H4 Cryptum open.jpg|The Cryptum opening.
File:H4 - Cryptum.png|[[John-117]] facing a reactivated Cryptum.
File:H5_Cryptum.png|The Cryptum located on Genesis.
File:H5-GenesisCryptumInterior.png|The central platform housing [[Cortana]] inside the [[Genesis]] Cryptum.
File:H5-CryptumFloor.png|The "floor" of the Genesis Cryptum.
File:H5-CryptumCeiling.png|The "ceiling" of the Genesis Cryptum.
</gallery>
 
===Concept art===
<gallery>
File:H4 CryptumFrame Concept.jpg|Cryptum concept art.
File:H4-Concept-Forerunner-Cryptum.jpg|Concept art of the Cryptum on the level ''Forerunner''.
File:H4-PrometheanCryptum-Views.jpg|Orthographic view of the [[Ur-Didact]]'s Cryptum.
File:HW2_Cryptum_Concept.jpg|Concept art for ''[[Halo Wars 2]]'' DLC, depicting a cryptum.
</gallery>


==List of appearances==
==List of appearances==
*''[[The Forerunner Saga]]''
*''[[Halo: Cryptum]]'' {{1st}}
**''[[Halo: Cryptum]]'' {{1st}}
*''[[Halo: Primordium]]'' {{Mo}}
*''[[Halo 4]]''
*''[[Halo: Silentium]]''
*''[[Halo 5: Guardians]]''
*''[[Halo Mythos]]''
*''[[Halo: Bad Blood]]''
*''[[Halo: Shadows of Reach]]'' {{Mo}}
*''[[Halo: Point of Light]]'' {{Mo}}
*''[[Halo: Outcasts]]'' {{Mo}}
*''[[Halo: Epitaph]]''


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


{{Forerunner}}
{{Forerunner|artifacts}}
[[Category:Forerunner technology]]
[[Category:Forerunner technology]]

Latest revision as of 18:28, November 20, 2024

This article is about the artifacts. For the novel, see Halo: Cryptum.
A Cryptum on Genesis

A Cryptum was a stasis chamber used as a means of exile by the Forerunners. Cryptums were most prominently known for their use by the Prometheans, the Forerunners' highest class of Warrior-Servants, who also termed them as Warrior Keeps.[1][2]

Background[edit]

The Ur-Didact's combat Cryptum.

A Cryptum is a sealed capsule where a high-ranking Forerunner would enter self-imposed exile, often as punishment for failure or dishonor; it was known to be used by those in power as a means with which to silence respected individuals whose punishment otherwise might prove problematic in the eyes of the public. However, some Forerunners occasionally entered a Cryptum voluntarily, in pursuit of a higher state of awareness.[3] When in use, a Cryptum's occupant would enter a timeless state of meditative hibernation known as xankara.[4] In this state, the Forerunner's mind would be wholly immersed in the Domain and they would be able to explore the immense stores of information contained therein.[5] The Forerunner would become unaware of the physical world around them, and could remain in a state of suspended animation for thousands of years.[4] In this state, the Forerunner's aging process would be slowed to a near halt, causing them to barely age even after a hundred thousand years in a Cryptum.[6]

Cryptums required an extraordinary amount of force to breach once sealed. They denied access to every species except Forerunners;[7] however, after being designated as Reclaimers, humans have been shown to be capable of unsealing Cryptums.[8] The nature of a Cryptum was unknown to most Forerunners, including Bornstellar Makes Eternal Lasting. However, he was aware that the violation of a Cryptum invoked dire consequences, one of which was angering the powerful Prometheans.[9]

Although Cryptums were often associated with the Prometheans, Forerunners of most rates could choose to enter one.[1] The Forerunner scholar known as Boundless, a member of the long-defunct rate of Theoreticals, was forced to enter a Cryptum after continuing her studies on Forerunner origins and Path Kethona in defiance of Warrior orders. After being opened a thousand years later, it was discovered that the Cryptum had been faulty, likely due to sabotage, and Boundless had died inside.[10]

Due to their sacred nature—specifically the involvement of the Domain—a Forerunner's entry into a Cryptum was traditionally a highly ritualistic process, overseen and guided by an associate of Haruspis. The associate would remove the would-be exile's armor and administer them gradual doses of a chemical known as inchukoa, which caused the body to shed most of its fluids via heavy sweating, initially dried and cleaned by the Forerunner's aides and attendant monitors. The Forerunner, rapidly desiccating and losing consciousness, would then be carried to a chamber housing the Cryptum. Only biological beings were allowed to be present in this stage; no artificial intelligences were permitted. The Haruspis' associate would chant words in middle Digon to aid the Forerunner's passage into the alternate state of consciousness. With the Forerunner almost completely mummified and unconscious, they were delivered into the Cryptum.[11]

Combat Cryptum are also an integral part of the Despair-class fighter, putting the operator in a subdued, trance-like focus-state, and using their neural activity to process all combat data the Despair-class fighter receives.[12]

Known Cryptums[edit]

Three known Cryptums have been described in detail; these differ from one another in a number of respects.

Djamonkin Crater[edit]

A Cryptum was discovered in Djamonkin Crater on Erde-Tyrene by the young Forerunner Bornstellar Makes Eternal Lasting, containing the meditating Didact. The Cryptum vessel, colored copper and steel, was ovoid-shaped, over ten meters high and at least as wide. The millennial seal of the Cryptum was said to be reinforced by two forces; the "wisdom of Harbou" and the "strength of Lang".[7][2] When the millennial seal was breached, the Cryptum emitted an intense flash of blue light, causing anyone in the vicinity to feel as if time had been suspended; this effect would last for several hours. As the Cryptum opened, it parted outward in three sections above the middle, revealing its meditating occupant inside.[13]

While the Cryptum preserved the consciousness of the Forerunner inside for an indefinite period, the occupant's physical body would be maintained in a vitrified state, lacking most of its fluids. The desiccation process was conducted prior to entry in a Cryptum by ingesting inchukoa.[11] Once the Forerunner was removed from the Cryptum, the body would be administered an initial supply of electrolytes, nutrients and other essential substances and then placed in a restorative bath where it would continue its recovery. The body's muscle structure would then be regenerated, a process requiring several days.

Requiem[edit]

The Ur-Didact's flagship, Mantle's Approach, was equipped with a personal "combat Cryptum",[14] which possessed many capabilities beyond the conventional one he used during his first exile. The Librarian sealed the Ur-Didact in this Cryptum, which was discovered over 100,000 years later by John-117 and the AI Cortana on the Forerunner shield world Requiem. This Cryptum was spherical in shape, with a black outer casing broken by a pattern of angular, orange-glowing "cracks" of hard light bonding. The combat Cryptum had a horizontal diameter of 86.1 meters (282.5 ft) and a height of 85.9 meters (281.7 ft).[1] Notably, this Cryptum locked its occupant in contained slipspace stasis, shielding the Didact from the effects of the Halo Array.[15] It also slowed the Didact's aging to a near halt.[6]

Unlike the one discovered by Bornstellar, this Cryptum had not withered the user, as the Ur-Didact remained as physically fit as he had been when he entered; it is unknown if this was the work of the Cryptum itself or the fact that the Ur-Didact wore his personal armor during hibernation. The Librarian had sealed the Didact in this Cryptum in hopes that long exposure to the Domain and meditation on his choices would help amend his motives and heal his mind, which had been severely damaged by his traumatizing encounter with the Gravemind. However, the Domain was later revealed to be of Precursor origin, its neuro-physical construction being obliterated upon activation of the Halo Array. This unfortunate reality resulted in the imprisonment of the Didact's consciousness as well. Trapped in total silence and darkness, the Didact would experience nothing but his own festering rage and madness for eons. Prior to his eventual release, the Didact also appeared to be awake in the Cryptum to some degree, since he was able to perform covert tasks like hinder use of a Cartographer[16] and manipulate radio transmissions.[17]

As a combat Cryptum, this Cryptum doubled as a means of transport, being able to travel at massive speeds or even through slipspace if necessary, as demonstrated when the Ur-Didact escaped Requiem's core in his Cryptum via a slipspace rift. It also had the capability to scan its surrounding environment or data networks in order to gather information. However, it had no weapons and was vulnerable to UNSC ones such as MACs and missiles.[18] This Cryptum was destroyed when the Master Chief detonated a HAVOK tactical nuclear weapon inside the Ur-Didact's flagship, Mantle's Approach, which it had joined with.[19]

Genesis[edit]

The Cryptum located on Genesis.

Located on the Builder world of Genesis, this Cryptum resembled the Didact's combat Cryptum. In 2558, Cortana used this Cryptum to imprison Blue Team, intending to wake them up in 10,000 years in order to show them the utopia she had created. Similar to the Didact's Cryptum on Requiem, the Cryptum on Genesis did not require the mummification of the occupants necessitated by the Didact's older Cryptum, as Blue Team were placed into, and emerged from, the Cryptum fully conscious and clad in their Mjolnir armor. Fireteam Osiris, who were on the planet at the time, attempted to rescue Blue Team from the Cryptum. Though they nearly succeeded with the help of Genesis' Monitor 031 Exuberant Witness, Cortana had a Guardian grab it and attempted to flee the planet with it. At the last minute, Osiris managed to restore control of Genesis to Exuberant Witness who sent a swarm of Constructors to steal the Cryptum from Cortana's Guardian. The Constructors were then able to cut the Cryptum open and release Blue Team unharmed.[20][21] They were aided by the digitized consciousness of the Ur-Didact who weakened the Guardian's tether by squeezing on the fiber relay of the hardlight grappling code.[22]

Bastion[edit]

In late 2558, 343 Guilty Spark discovered that, amongst the Librarian's topics of study in her secret laboratory at Bastion was working Cryptums.[23]

Trivia[edit]

  • The millennial seal on the Didact's Cryptum placed on Earth was sealed by two forces known as the "wisdom of Harbou" and "strength of Lang".[7] The names appear to be a reference to the German actress and author Thea von Harbou and the film producer and screenwriter Fritz Lang, who were married and made several films together. Fictionally, these seemingly out-of-place names may be explained as a quirk of the AI-assisted translation software—which often replaces the original Forerunner proper names with contextually similar Earth names—used to decipher the in-universe documents that comprise The Forerunner Saga.
  • Series 4: Reclaimer's logo in the The Master Chief Collection is a stylised representation of the Ur-Didact's Cryptum.

Gallery[edit]

  • John-117 facing the Ur-Didact's Cryptum.

    John-117 facing the Ur-Didact's Cryptum.

  • Angled view of the Ur-Didact's Cryptum.

    Angled view of the Ur-Didact's Cryptum.

  • The Ur-Didact's Cryptum in the core of Requiem.

    The Ur-Didact's Cryptum in the core of Requiem.

  • The Cryptum hovering in place prior to opening.

    The Cryptum hovering in place prior to opening.

  • The Cryptum preparing to open up and disgorge the Ur-Didact.

    The Cryptum preparing to open up and disgorge the Ur-Didact.

  • The Cryptum opening.

    The Cryptum opening.

  • John-117 facing a reactivated Cryptum.

    John-117 facing a reactivated Cryptum.

  • The Cryptum located on Genesis.

    The Cryptum located on Genesis.

  • The central platform housing Cortana inside the Genesis Cryptum.

    The central platform housing Cortana inside the Genesis Cryptum.

  • The "floor" of the Genesis Cryptum.

    The "floor" of the Genesis Cryptum.

  • The "ceiling" of the Genesis Cryptum.

    The "ceiling" of the Genesis Cryptum.

Concept art[edit]

  • Cryptum concept art.

    Cryptum concept art.

  • Concept art of the Cryptum on the level Forerunner.

    Concept art of the Cryptum on the level Forerunner.

  • Orthographic view of the Ur-Didact's Cryptum.

    Orthographic view of the Ur-Didact's Cryptum.

  • Concept art for Halo Wars 2 DLC, depicting a cryptum.

    Concept art for Halo Wars 2 DLC, depicting a cryptum.

List of appearances[edit]

Sources[edit]

  1. ^ a b c Halo 4: The Essential Visual Guide, page 131
  2. ^ a b Halo Waypoint, Cryptum Glossary (Retrieved on Mar 14, 2014) [local archive] [external archive]
  3. ^ Halo: Cryptum, page 66
  4. ^ a b Halo: Cryptum, page 63
  5. ^ Halo: Silentium, page 255
  6. ^ a b Halo: Epitaph, chapter 9
  7. ^ a b c Halo: Cryptum, page 61
  8. ^ Halo 4
  9. ^ Halo: Cryptum, page 54
  10. ^ Halo: Silentium, page 67-68
  11. ^ a b Halo: Silentium, page 50-55
  12. ^ Halo Encyclopedia (2022 edition), page 389
  13. ^ Halo: Cryptum, page 62-64
  14. ^ Halo: Silentium, page 292
  15. ^ Halo Waypoint - The Halo Bulletin: 9.24.14
  16. ^ Halo 4, campaign level Requiem
  17. ^ Halo 4, campaign level Forerunner
  18. ^ Halo 4, campaign level Infinity
  19. ^ Halo 4, campaign level Midnight
  20. ^ Halo 5: Guardians, campaign level Guardians
  21. ^ Halo 5: Guardians, campaign level The Breaking
  22. ^ Halo: Epitaph, chapter 16
  23. ^ Halo: Point of Light, Epilogue

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