At www.ibtimes.co.uk/prehistoric-greenlanders-ate-bowhead-whales-4000-years… … which is a reference to the arrival of paleo-Eskimo culture in Greenland. How they got there is unknown but when they got there provides a clue – between 4500 and 4000 years ago. At this time there was widespread and large scale migrations of different human groups in diverse parts of the world. The movement of the Eskimo culture is just one of those movements (as explored by Moe Mandelkehr in SIS publications). It is thought they moved rapidly from the Canadian Arctic and Alaska eastwards across the Arctic coast.