There's a delicious irony about Google's latest efforts to photograph every inch of our planet and turn it into an online map.

After causing what can only be described as a kerfuffle by driving around our towns in its spooky-looking camera cars, Google is now using rickshaw bikes to creep up on places such as Stonehenge.

And it's there, by the megaliths, that things really come into focus.

On the one side of the fence, there's a geek on a trike taking a picture for a service that is synonymous with the information age. Thanks to Google, we know more about everyone and everything than ever before, even if sometimes those things turn out to be simply untrue or even rather private. Google is so ever-present and all-knowing that I wonder someone hasn't set up a church to worship it.

On the other side of the fence, there's that great big grey mystery. If you ask Google why the stones are there, you'll get a few million answers, but in the end they are all guesses.

Google, which has the answer to everything, has sent a man on a bike to take a picture of something that it cannot explain and which will be there long after it has vanished up the exhaust pipe of its own search engine.

It's a moment to cherish, and I'd like a picture of it.