3D Model: A Narrow Canyon-like Tunnel Approximately 6 Meters High, With An Open Ceiling Letting In Natural Light. The Walls Are Made Of Uneven, Coral-like Formations—organic, Porous, And Richly Textured With Natural Curves And Erosion. The Path Winds Gently, With Some Parts Slightly Wider Or Tighter, And The Ground Is Rough And Natural. The Coral Surfaces Vary In Tone (pale Reds, Oranges, Pinks, And Whites), Resembling A Dry Reef Structure Rather Than Underwater. Sunlight From Above Creates Soft Shadows And Highlights Across The Irregular Surfaces. Stylized Realism, Optimized For 3D Scene Creation With High Mesh Detail And Texture Depth