Why are ice caves blue?
Why are ice caves blue? Glacier ice is blue because the red (long wavelengths) part of white light is absorbed by ice and the blue (short wavelengths) light is transmitted and scattered.
What is a blue ice cave?
The Blue Ice Caves are formed naturally every winter. Like all ice caves, they begin as crevices in the glacier. As the glacier melts, water finds its way into these crevices, making them expand and melt faster than the glacier itself.