The monolithic slab of ice, floating just off the Larsen C ice shelf appears quite unnatural given the 90-degree angles. NASA took the image as part of Operation IceBridge, a mission to image Earth's polar regions in order to understand how ice has been changing in recent years.

Tabular icebergs typically break off of ice shelves, which are tabular bodies of thick ice. When there is a clean calve of the iceberg, the angles can be close to 90 degrees.