Crystal Entity in a Subterranean Tunnel

A high-detail concept art scene of a crystal entity in a subway tunnel. The tunnel has cracked concrete walls, damp surfaces, rusted rails, puddles reflecting cold light, and faint graffiti. Overhead, fluorescent lights cast a cold blue-green glow and a hazy fog swirls through the air. In the center, a colossal crystal entity floats just above the rail line. It is translucent and multifaceted, with sharp geometric facets that refract the light into prisms and rainbows across the tunnel. A subtle energy core glows at its heart, pulses softly, and delicate energy veins trace along the crystal's facets. The scene blends organic mysticism with industrial design—a living crystal in a hostile transit corridor. The camera angle is cinematic, low or eye level, with a shallow depth of field that keeps the crystal crisp while the tunnel recedes into bokeh. Color palette: icy blues, teal, magenta accents, and rust-orange highlights. Style: concept art for sci-fi fantasy, hyper-detailed, with volumetric light shafts and dust. Additional details: graffiti, wires, dripping water, and distant silhouettes of commuters implied in the shadows.