Among the sprawling mass of ice of all shapes and sizes in the Antarctic lies one that is perfectly rectangular.
Though it may look bizarre, it is, according to a NASA and University of Maryland scientist, quite a regular natural occurrence.
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"We get two types of iceberg," Kelly Brunt told LiveScience.
"We get the type that everyone can envision in their head that sank the Titanic, and they look like prisms or triangles at the surface and you know they have a crazy undersurface.
"And then you have what are called tabular icebergs."
The tabular iceberg is long and flat and will have split from the edges of ice shelves.
Ms Brunt compared the formation of a tabular iceberg to that of a human fingernail growing a bit too long and cracking off, and they often form a rectangular shape.
"What makes this one a but unusual is that it looks almost like a square."
Ms Brunt said the iceberg looked to be fresh, with its near perfect right angled corners suggesting the wind and waves hadn't had a chance to erode it yet.
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