THE ANTARCTIC CONTINENT IS COMPLETELY COVERED IN DENSE GLACIERS. THE AVERAGE DEPTH IS TWO MILES. OVER MILLIONS OF YEARS THE COMPRESSED ICE TURNS BLUE. THE GLACIERS MIGRATE TOWARDS THE SEA AT UP TO 70 FEET PER YEAR. WHEN THEY REACH THE SHORE THEY FRACTURE. THIS IS HOW THE RARE BLUE ICE BERGS ARE FORMED.