Southernmost settlements
There are many research stations in Antarctica, both permanent and summer only. Many of the stations are staffed all year. McMurdo Station is the largest with an average population of 1200.
Ward Hunt Ice Shelf
The Ward Hunt Ice Shelf is the largest ice shelf in the Arctic, located on the north coast of Ellesmere Island, Nunavut, Canada. During the 20th century the Ellesmere Ice Shelf broke up into six separate shelves, the largest being Ward Hunt. Ward Hunt Ice Shelf is about in size, and has been in place for approximately 3,000 years as part of a continuous ice shelf that encompassed the northern coast of Ellesmere Island until the beginning of the twentieth century. In 2005 one of the other shelves, the Ayles Ice Shelf, calved completely.