>But Mr Deary said: "It's the earliest representation of a boomerang. There's nothing
>else it could be."

I wonder if he's being serious?? My stepdaughter has some of his books, n' they're not that bad really as far as history for kids goes.

There may be some truth in what he says. Not particularly about it being a boomerang, but that the curved arms could represent the spinning motion of the heavens.