This is an abstraction of the old, wooden Granite Island causeway at Victor Harbor in South Australia.
The causeway was in such a bad condition that it could not be repaired. It has been dismantled and replaced by a concrete one. There are just a few pieces left at both the Victor Harbor and Granite Island ends. They -- the heritage remnants -- appear to function as viewing platforms.
No doubt, many photographers would say this picture is not an abstraction. Others would point to the formal design of the picture and say that it is formalist but not even a weak abstraction. So I wrote a brief post on abstraction on the thoughtfactory website in an effort to open up a space for the possibility of contemporary photographic abstractions.