Twinmark

A town built across a fault line where two different types of crystal terrain meet, creating a visible seam that bisects the settlement. The western half gleams silver; the eastern half refracts light into constant rainbows. Twinmark's residents have learned to navigate the disorienting visual effects, but visitors from Glass Reach still struggle. Out in the Glass Expanse, this site is part of the network of prism-fields, shard-towns, and silica plateaus that surround Prism City. Light bends here in ways the Pattern cannot quite hold — the air sometimes refracts a scene from a different hour, and the Starving Silence forms where light has shattered the same way too many times in the same place. The Knowledge Fragmentation Principle was first formalised by Expanse philosophers a generation before the Luminous Fold accepted it.