Silent Construct

Silent Construct is a region exclusive to the Downpour DLC, with being the only Slugcat that can access it.

Overview
The Silent Construct is the decayed remains of Five Pebbles, long since fallen after having been completely consumed by the Rot, with most of his machinery silent and dead. After his collapse, his superstructure crushed the Shaded Citadel, destroying most of it.

Despite this decay and devastation, Five Pebbles himself is still barely alive.