Strilun IV
H3 Snowbound Planets.png


Strilun system, Orion Arm

Orbital position:





Surface temperature:




Ecumene (Original)


Strilun IV[1] is a Covenant-controlled world situated in the Orion Arm, close to human space.[2][3]


Forerunner eraEdit

Strilun IV, like other worlds such as Kamchatka and Zehar VI, was inhabited by the Forerunners. During their reign, the Lifeworkers held interest in Strilun IV due to its status as an ice world - building vast rehabilitation complexes within the world's glacial layers.[1]

Covenant eraEdit

During their expansion, the Covenant found Strilun IV and settled the world, building multiple bases on its surface surrounded by Shuku-pattern sentry turrets and A'uo'i-pattern sensor emplacements.[4][3]

Production notesEdit

Strilun IV is the setting for the Halo 3 multiplayer map Snowbound. The map's location was revealed thanks to the Halo Encyclopedia (2022 edition). On page 359, Strilun IV is mentioned as an ice world housing Forerunner complexes similar to Kamchatka and Zehar VI (the setting of the map Waterfall).

In the June 2022 edition of Canon Fodder, 343 Industries confirmed that the setting of Snowbound was hidden within the book's pages, though left the specifics of this lore ambiguous as to encourage fans to uncover the mystery for themselves.[5] The connection is confirmed on page 301, with the caption for the Shuku-pattern turret confirming the world as Strilun.


  1. ^ a b Halo Encyclopedia (2022 edition), page 359
  2. ^, Bungie Weekly Update 01/11/08: "It’s on an alien world discovered and controlled by the Covenant. It’s location is secret, but it is in this spiral arm of the Galaxy. Close to human occupied space. If you look through the glass floors of the Covenant structures, you’ll see Forerunner artifacts buried beneath the ice." (Retrieved on Jan 30, 2021) [archive]
  3. ^ a b Halo Encyclopedia (2022 edition), page 301: Shuku-pattern sentry turret caption "STRILUN_DEFENSE"
  4. ^ Halo 3, multiplayer map Snowbound
  5. ^ Halo Waypoint, Canon Fodder - Encyclopedia Extravaganza (Retrieved on Jun 1, 2022) [archive]