| Category | Terra-Firma
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| Type | large geographic areas
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| Alias | Sectors
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In the Demon Spawn War, the world Bal-Kriav was divided into sectors. These sectors were then assigned to Covenant generals. These ancient Covenant war maps, and there Modeus Grid system, are still in use today.
Super regions are areas containing many regions, examples of these are Midrêth, Ninilêth and Tarôzîr. Regions beneath the surface are collectively called the Subterranean Tiers, broken up into tiers (or levels) of varying thickness.
Subterranean Tier 1 ( ST-1 )
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Subterranean Tier 2 ( ST-2 )
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