NASA Shared an Image of a Perfectly Rectangular Iceberg Floating inAntarctica.

NASA’s Cryospheric Sciences Program released this astonishing aerial photo of a rectangular iceberg in Antarctica. Located on the Larsen C ice shelf, the curious iceberg is likely one mile or so across. From the BBC News: It’s a college-campus-size iceberg which was spotted on the Antarctic Peninsula margins. An aerial photo shared by NASA on Wednesday captured a rectangular slab of ice sliced so smoothly that it appears unnatural. Experts believe that the iceberg fractured from Larsen C, a large ice shelf fed by several glaciers on the east side of the peninsula, in May. They’re still unsure, however, whether it will cause the rest of the shelf to destabilize.

Such objects are not unknown, however, and even have a name – tabular icebergs. These are flat and long and form by splitting away from the edges of ice shelves. Kelly Brunt, a glaciologist with Nasa and the University of Maryland, said the process of formation was a bit like a fingernail growing too long and cracking off at the end. They were often geometrically-shaped as a result, she said. “What makes this one a bit unusual is that it looks almost like a square,” she added.