stone arch ruin 3d model

ancient medieval stone ruins, broken archways and collapsed walls, thick solid masonry construction, tightly connected stone blocks, no gaps between geometry, continuous surface, watertight mesh, grounded structure, stones firmly stacked and interlocked, realistic weight and gravity, large heavy stone pieces, detailed stone textures, rough chiseled surface, cracks and erosion, chipped edges, moss growing in crevices, wet stone with subtle reflections, dirt and grime buildup, scattered stone debris and rubble on the ground, fallen blocks clustered naturally, debris partially embedded in ground, no floating pieces, no disconnected fragments, stable geometry, clean topology, game-ready asset, high detail, readable structure, no thin geometry, no holes, no broken mesh, realistic proportions