pink organic tunnel 3d model

HIGHEST PRIORITY: DO NOT GENERATE HUMANS, CHARACTERS OR ANY FIGURES. Create a fully enclosed 3D GAME LEVEL environment (not an anatomical model). A continuous hollow organic tunnel that players can walk inside in first-person or VR. The entire scene is ONE connected walkable map like a dungeon corridor. Requirements: - fully sealed 360-degree tubular interior space - no openings, no cutaway, no sliced view - no exterior visible - no spiral or separated organ parts - no characters, no NPCs, no mannequins - no human scale reference objects Design: - stylized organic sci-fi intestinal tunnel - smooth fleshy walls with repeating folds - continuous corridor geometry - Unreal Engine 5 quality - pink/red biological material - cinematic lighting, volumetric fog, soft SSS Output must be ENVIRONMENT ONLY, game-ready walkable level inside a giant organic tunnel.