stone rock ceiling 3d model

Photorealistic stone ceiling, flat surface, made from large irregular natural rocks, not bricks, not tiles. The stones are uneven, organic shapes, like real outdoor rock formations, not man-made blocks. Highly detailed rough surface, with cracks, erosion, chipped edges, dirt and natural imperfections. Dark gray stone with subtle brown tones, weathered by time, looks like ancient ruins. Surface is chaotic and non-repeating, NOT tiled, NOT grid-based, NOT symmetrical. Small amount of moss and thin hanging vines growing naturally between cracks. Style: photogrammetry scan, ultra realistic, no stylization, no gamey look. Size: around 3x3 meters. Game-ready asset, PBR materials, optimized. no bricks, no square pattern, no repetition, no tiling texture, no clean edges, no stylized look looks like scanned real rock ceiling, like cave or ruined structure, completely irregular surface