A ground impact mark for heavy landings, ground slams and mortar hits. Nine tapered ridges up to 0.14 m high radiate from the impact point, seven shorter seams glow between them, a crested rim and a lathed vent mark the crater, and eight grit chips are scattered across the outer ring. Bounding size 0.81 by 0.18 by 0.88 m, metres, +Y up, +Z forward. Origin: ground contact at y=0. The effect emits from the ground plane and its lowest geometry sinks 0.031 m under that plane, so the mesh is settled onto y=0 and the emission plane sits 0.031 m up. Opaque solid geometry throughout: this pack uses no alpha blending and no transmission, so the silhouette and the emissive material carry the read. Static mesh with no animation clip, no skinned rig, no collision and no navigation data.