B15K - A Huge Tabular Iceberg
This is the edge of a huge tabular iceberg that broke away from the Ross Ice Shelf in March 2000. The berg was around 300km long by 40km wide (186 x 25 miles, around twice the area of the state of Delaware). It has since broken up into several smaller but still very substantial chunks called B15A, B15B etc.
When first encountered it is difficult to conceive that such a thing can simply be floating in the sea, it looks like the edge of some enormous landmass.
Photo; © Mike Usher - Pictures from an icebreaker cruise to Eastern Antarctica.