Four metre section of the inside of a drained lava tube: an arched roof 2.2 m across with a glazed lining, a flat floor of frozen flow and a bench mark along each wall where the level dropped. Free 3D model for volcanic terrain, lava field and natural disaster game scenes in Unity, Godot, Unreal, three.js and Blender. Overall 3.50 by 1.97 by 4.00 m (X by Y by Z). Metre units, +Y up, the front face toward +Z, resting on y=0 with the origin on the footprint. Open at both ends along Z with tube ports there; the floor surface is 0.25 m above the module base, the same datum as every ground module in the pack. Static geometry; no rig, collision or navigation data. Molten rock and glow seams are emissive geometry, never lights: the pack embeds no lights, and lava flow, steam, smoke and fire are static because a fluid needs a shader or a particle system that a rigid node transform cannot carry. A generic volcanic landscape: no real volcano, park, observatory or equipment maker is named or depicted, and every sign, plate and marker face is blank.