So there's a bit of a story behind this picture right here. The original poster of this picture had a package to send while visiting Iceland. The only problem was that he didn't have the exact address of the place he wanted the package sent to. So he did what any reasonable man would do in his position - he drew a map with instructions for the postman to adhere to.
Now, the wild thing is that this actually worked. This is just how dedicated Icelandic mailpersons are to their jobs. This is the type of thing that could happen in only a few other places.