Ah ... art. Art is a contentious area for discussion. One person's work of art is another person's random spots of paint on a canvas. As Rudyard Kipling once put it, "it's clever, but is it art?".

Even artists can't seem to agree on this topic. Compare and contrast Picasso's comment that "everything you can imagine is real" with Warhol's contrarian stance that "an artist is somebody who produces things that people don't need to have".

Now add maps into the equation and you have a debate where people probably won't always agree. So it was with a conversation on Twitter between myself, Steve Chilton, chair of the Society of Cartographers and psychogeographer Graham Hooper. We were talking about a map like this one ...

This is post number six in the ongoing #mapgasm series of posts on maps found on the interwebs that I like. Yes, it's another map. Yes, it's another Tube map. I make no apologies for this.

A simple map is often a good map. Cutting away cartographical clutter can reveal the heart of what a map is trying to show. But sometimes you can maybe take the map pruning just a little bit too far. Take the map of the London Underground; surely one of the simplest and more effective maps there is. Surely there's not much scope for making it any simpler?

Dutch computer scientist Edsger Dijkstra, who was awarded the Turing Prize in 1972 is reported to have once said ...

If debugging is the process of removing bugs, then programming must be the process of putting them in.

With this in mind, if the process of taking geographical information and making this into a map is called mapping ... what do you call the opposite, the process where you take a map and deconstruct it back to what makes up the map in the first place.

Un-mapping? Anti-mapping? De-atlasing? Whatever you call it, you start out with a map and you end up with an oddly compelling form of art. Which is just what French artist Armelle Caron has been doing.

Start with the map. Let's take a map of Berlin. If you've spent any time in this city, the map will look pretty familiar. It's not the most granular or small scale of maps, but that doesn't matter. What happens next is most definitely art and is akin to magic.