Watercolor Butterfly Wanders Through Underground Tunnels

Watercolor illustration of a delicate butterfly hovering through an underground tunnel. Use soft wet-on-wet washes in pale blues, teals, lavender, and subtle gold accents to imply light. The tunnel features damp gray stone walls, moss patches, and faint stalactite-like drips; a gentle glow filters from cracks above, casting a halo around the butterfly. Render with painterly, feathered wing edges, light granulation, and a slightly blurred background to emphasize the wing detail. Dreamy, tranquil mood, high-resolution, suitable for print.