Dr Chris and Dr Xand van Tulleken are with the top experts on the planet to show you more things that will blow your mind! They are back at the incredible megalith of Store Glacier in Greenland where Chris Packham wants to investigate some icy whirlpools, and they wonder at the incredible 3D image of the underwater face of the glacier. Just as they are about to leave, the glacier delivers a parting gift of astonishing scale, natural destruction and beauty... Show less