Darkriver Cavern

     The rahkshi suddenly die, as the shadows congeal into spears in one blink and destroy them in the next. The toa of shadow responsible steps forth, and opens a portal to signal the others to join.

     The shadow toa set to work on turning the cavern into a proper base. The Cavern's face/mouth is carved into the shape of a Kanohi Volitak, thick darkness pouring from it.

     A proper base is built within the dam, inside the shadows which would kill any normal being. More constructions are placed above, more to distract from the main base than their apparent functions. Any heatstones which were unleashed in this area are destroyed and sent far away.
     A thick 'fog' of shadow settles upon the mountain base, never relenting. In fact, it seems to darken further each day and maintain it's darkness in the light.
     The cavern itself is altered using elemental shadow, amplifying it's natural darkness generation enough that the river pouring from it is as concentrated as elemental shadow.

Pop the pods go boom/

A small squad of drones is teleported in, and some open fire upon the pod while the rest guard them from the zombies. They use their built in adaptation kanoka tech to allow them to function within the elemental shadow, and use railguns instead of their normal plasma blasters.

Energy conserving adaptation is created, and backup is requested. After a while of losing energy they retreat out of it’s range, firing the railguns from there.

The drones return to the pod to attack it, but collapse as they cannot produce energy in pure shadow. RIP. 1 victory for the zombie pods

Hyper dense artillery shells laced with disintegration fall upon the Hau shield in an attempt to break it.