Tectonian Subsector

The Tectonian Subsector is located between 540 to 620 lightyears beneath the galactic median. For most of its formal history, the sector has been ruled by Tectonia Prime, the volcanic hive world whose sun marks the highest point in the sector. It is also home to the Tectonian Throat, the most stable pathway into and out of the Vlaktes Mare, and the only connection that its peoples and institutions have to the wider Imperium.

After 11 post VCM.M41 and the Fall of Tectonia Prime, control of the subsector became unstable, with many of its worlds falling to Chaos predation at the whim of its new, dark masters.

The Foundling Worlds
Main article: Foundling Worlds

The Foundling Worlds are among the oldest settled worlds in the entire Vlaktes Mare.

The Meaxi Cluster
Main article: Meaxi Cluster

The Meaxi Cluster lies to the stellar south of Tectonia and the Foundling Worlds, is most well-known for its stretch of forge planets, known colloquially as the Anvil Worlds.