A 4 m square concrete floor slab 0.22 m thick, with a deck plate laid proud of its top face and two rusted downstand beams under it. The pivot is on the grid origin and a port sits at the centre of each edge, so decks tile without a gap. Dimensions 4.02 × 0.45 × 4.02 m (X × Y × Z). Metre units, +Y up, +Z front; origin on the ground at the footprint centre unless stated. Damp conifer forest realism: wet concrete and corroded corrugated steel, weathered pine, dark bark and soil, deep needle green, olive canvas, gunmetal and machined steel, with five emissive colours (amber fire, white floodlight, green status, blue screen, red warning) that also form the loot rarity ladder. Static geometry; no rig, animation, collision or navigation data.