During the February storm, Hut Point was seriously undercut, some of the underlying ice in its permafrost was exposed, and the ice, of course, started to melt. At the beginning of March, the end of the point, uh...broke off, as seen above.
Permafrost is not always "permanent," as has been shown elsewhere, particularly in the Arctic where global warming trends and rising ocean levels have affected the soils underlying coastal villages. Melting has also been observed in Antarctica in areas such as the Dry Valleys. The melting of Hut Point was exacerbated by particularly violent wave action from an unusual angle.
The above photo clearly depicts Vince's Cross on top of the knoll; fortunately it and the nearby Discovery Hut (built by Robert Falcon Scott's 1902 expedition) are in no danger. Also of interest--a "before" photo (right) taken before the crack developed. It shows a bit of lens fog, but it also depicts Scott's hut as well as the temporary buildings being used by the New Zealand Antarctic Heritage Trust to conserve the hut. More information (with video) on the conservation effort is in this Antarctic Sun article.
For more information, some scientific background, and a closeup photo of the crack, see Peter Rejcek's 7 March 2014 Antarctic Sun article "Coastal Erosion".
Here are some comments by Brian Wheater who worked at McMurdo a few (!) years ago:
The photo at the top of this page is by Tim Foster, and the "before" photo is by Zachary Schroeder; these are used by permission. Also thanks to Jordan Dickens and Brian Wheater!