Greenland is naturally the land of eternal ice. The ice cap that covers the majority of this boreal island extends right down to the Arctic Ocean via vast glaciers that are each as majestic as the next. The most well-known and spectacular of these is without a doubt the Humboldt glacier. It is the vastest coastal glacier in the Northern Hemisphere, with a glacier terminus that reaches 110 km in width. Advancing inexorably towards the sea, it regularly calves veritable ice cathedrals – gigantic icebergs that detach themselves from the glacier before toppling and crashing into the frozen ocean.