interior of a cave or underground tunnel

interior of a cave or underground tunnel. The walls are rough and uneven, composed of layered rock formations. The left side features lighter-colored, textured stone with water stains or mineral deposits. The central area has darker, fractured rock, while the right side presents a smooth, reddish-brown rock surface, suggesting a different geological composition or alteration. The tunnel appears dimly lit, with shadows adding depth to the rocky textures.