“Icebergs of this shape are called tabular”
“Despite its eerily perfect shape, this iceberg is completely natural, and in fact not even that unusual. Ice has a crystal structure that means it prefers to break along straight lines.”
“In the northern hemisphere, ice sheets sit on bedrock, and the friction between the ice and the ground means icebergs form in the irregular shapes that most of us picture when thinking of an iceberg.”
“In contrast, the edges of the Antarctic ice sheet are mainly made of floating ice shelves. These ice slabs are free to break along their natural crystal structure, resulting in icebergs that often have straight edges and smooth tops.”
Via (https://reddit.com/r/oddlysatisfying/comments/ub4m7x/this_rectangular_iceberg/)
Description (https://theconversation.com/how-a-near-perfect-rectangular-iceberg-formed-105655)
Photos (https://www.flickr.com/photos/nasa_ice/albums/72157702586203404/)
danelabonte 