underground arena octagon 3d model

Ultra detailed dark underground fighting arena, massive octagon cage in the center, brutal Hanma-inspired combat stadium, industrial metal architecture, multi-level balconies packed with shadowy audience silhouettes, giant red neon banners hanging from chains, cracked concrete floor with battle damage, red spotlights from ceiling, cinematic volumetric lighting, realistic smoke and fog, glowing red ambient lights, high detail metal cage, dark black and crimson color palette, intimidating atmosphere, AAA game quality environment, realistic textures, PBR materials, large scale arena, dramatic shadows, gritty underground fight club aesthetic, next-gen game environment, optimized topology, highly detailed 3D scene, Unreal Engine 5 quality, epic combat battleground, no characters, no UI, environment only.