The Vallusk Cluster, situated in the Gordian Reach sector of the Outer Rim Territories, close to the Roil, represented a cluster of protostars. No planets capable of supporting life existed there.
The Vallusk Cluster served as a frequent point where starships would exit hyperspace to adjust their navigation computers before proceeding to Arkuda.
To allow the Rebels stationed at Massassi Station to bypass the Imperial blockade surrounding the Yavin system, Admiral Ackbar initiated a distraction within the Vallusk Cluster by confronting four Star Destroyers.