Star road

Star roads, also known as unbending filaments, were a form of Precursor technology.

Overview
One of the more common types of artifacts left behind by the Precursors, star roads were seemingly inert, virtually unbreakable cables on an immense scale that lay across the galaxy for millions of years, connecting planets and even linking entire star systems to one another. Charum Hakkor and its system was once home to many star roads, which were used by prehistoric humans to link their orbital defenses surrounding the planet.

However, during the last decade of the Forerunner-Flood war, it was revealed that the star roads were not completely inert. Along with other once-inactive Precursor constructs, star roads across the galaxy began to activate and aligned themselves with the Flood, taking on various configurations which were capable of interstellar travel. The star roads, in their weaponized form, were incredibly powerful, being capable of crushing entire planets by the tidal forces they generated as well as blocking or interfering with Forerunner slipspace travel as well as disabling their weapons and other systems. During the Forerunner-Flood war, multiple star roads were used to trap Forerunner forces that were soon overwhelmed by the Flood.

Due to star roads being based upon the fundamental principle of neural physics, they were vulnerable to the effects of the Halo Array. The first evidence of this was when the Precursor structures on Charum Hakkor were destroyed by Installation 07's test-firing. When the Array was fired, star roads within the rings' effective range were destroyed. It was theorized that star roads and other Precursor constructs in slipspace transit may have been able to survive the pulse, although this was not known for certain; to inflict as much damage as possible, the Forerunners would time the firing to a point when the maximum number of star roads would occupy normal space.

List of appearances

 * Halo: Cryptum
 * Halo: Silentium