Art style: Grim Fantasy.
The iron-rich brine reaches the surface and reacts with oxygen, shifting from dark to rusty-red. Static vertical close-up framing. Bright daylight highlights the chemical change on the ice.
SPOKEN LINE — AUTHORITATIVE, overrides any line quoted earlier in this prompt:
The only words spoken, verbatim: "When the iron-rich brine reaches the surface, it reacts with oxygen...
