Roundhouse Dunes Kit

Desert roundhouse kit: a CURVED brick arcade of nine arched bays with real voussoir arches, mullioned windows and a collapsed truss roof whose rafters sweep inward from the wall head; a turntable pit cut as a genuine hollow out of the sand slab with rails fanning out beneath the drift; and a water tower with a toppled signal post as their own unit. Publishes PitRef, BayRef0-8 and RailRef pivots for an engine to read. Built for the Roundhouse Dunes piece in the Unity Lab. Two lessons are baked in: the pit is BOOLEAN-CUT because a union of solid shapes can only ever be convex, and environment-scale units carry their own sun because a studio rig with fixed wattages at radius-proportional distances renders a 50m scene black. Siblings ship as roundhouse-pit / -props.glb.