If you are reading this article it can mean only one thing: the Mayans have let us down once again, it is 2013, and there was no end of the world. This doesn't bother me, as there are still a few things I've been planning to do with my life. But those who had made some special preparations for doomsday might be less sanguine, as well as feeling a bit embarrassed. Some have bought in extensive supplies: bottles of water, canned food and medicines... spending a fortune in the process. Those who have taken the whole thing with the utmost seriousness and decided at all costs (literally) to survive Armageddon have spent even more. In what way? In an underground manner, so to speak. For hundreds of years people have hid under the ground to protect themselves from danger. And bunkers still very much form part of our reality today. However, the latest designs tend not to resemble the complicated underground towns built by Hitler's army in the Góry Sowie mountains in southwest Poland. These d