Ire Fortress

The lights ahead pulsed from a fortress crafted of white stone. It wasn’t a city, but close enough for him. That light had an odd quality; it didn’t burn or flicker like a flame. Some kind of limelight? He drew near and pulled up beside one of the odd rock formations that were common out here. It had hooked spikes drooping from it almost like branches.

The very walls of this fortress glowed faintly. Was that mist? It didn’t seem to have the same hue to it; it was too blue. Keeping to the shadows of rock formations, Kelsier rounded the building toward a brighter light source at the back.

This turned out to be an enormous glowing cord as thick as a large tree trunk. It pulsed with a slow, rhythmic power, and the light it gave off was the same shade as the walls—only far more brilliant. It seemed to be some kind of energy conduit, and ran off into the far distance, visible in the darkness for miles.

The cord passed into the fortress through a large gate in the back. As Kelsier crept closer, he found that little lines of energy were running across the stone of the wall. They branched smaller and smaller, like a glowing web of veins.

Mistborn: Secret History Part 5 Chapter 2