Glaciers are mysterious forces of nature. Made from ice thousands of years old, they flow out of Antarctica's centre in vast rivers, thousands of miles long.
But how do these destructive streams of ice move? Why is their ice such a vibrant blue?
Ri Christmas Lectures: Antarctica
Heart of a Glacier
Windfall Films for Channel 4
Credit List
Producer/Director Duncan Bulling
Editor Justin Badger Production Manager Cherry Brewer Executive Producer David Dugan