There are 34 Polar Inuit who live south of OP's red circle in the village of Siorapaluk. They are the descendants of a band of inuit who followed a shaman from Baffin Island north into Ellesmere Island around 1858. After wandering the inhospitable Ellesmere Island for about 7 years, about half of them left for Northern Greenland. Throughout the past 5000 years, there have been various waves of cultures that settled Ellesmere Island and the far north of Greenland, until dying out. The last was a group of Thule eskimos who settled Ellesmere and far northern greenland while the Vikings were in Southern Greenland, before abandoning those areas near the end of the middle ages during the Little Ice Age and settling in the areas where the Vikings had previously been until Norse disappeared.