Part of the iceberg, the part facing Briggs and the lighthouse, was wedge-shaped. It made the entire mass look like an ocean liner drifting down from the Arctic, but then on the morning of the fourth day the wedge itself broke off, creating a surge that rolled all the way to Attu Island and washed the shore like an unexpected tide. After that Briggs thought the berg resembled a wedding cake. He estimated its course from the gallery deck of the lighthouse and wondered if he should log it as a navigation hazard. Not that it would last much longer
