The ice vault arches over the cave like a frozen wave. Warm daylight enters through the opening, illuminating the ice in shades of blue, green, and gold. In the distance, a few mountain peaks of the Engadin glow in the last light of day.
The clarity of the ice is striking, resulting from its extremely slow formation: water freezes drop by drop, allowing the crystals to grow in an orderly way with hardly any flaws. With almost no air bubbles or impurities, light can pass through unobstructed, giving the ice a deep blue green tint.
