This basalt sculpture was done by NSW sculptor John Petrie. His statement is that it's an interplay of opposites; part and whole (I'd suppose the sum of all of the parts), internal / external, opaque /reflective and earth and sky. The name comes from the way in which the segments have come to rest.
Addendum: My personal opinion is that Facebook is a sociopathic organisation that steals other peoples' intellectual property (including the images in this gallery) despite being explicitly denied permission to do so.