What is This?

Its not a bone, so Molly is puzzled. Why is this here?

Edit: This was taken on 21 April, 2011. My own camera was not to hand, so I grabbed my wife's. As I was loading the photograph, I did not pay attention to the screen, and it went through as "3 March 2010" - obviously her clock has gone astray.

The point (if there was one) of the photograph is lost. The 'real' date of the photograph is during Easter Week of 2011, and the figure is of an Easter Island moai.