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The whole underground shelter thing is not as cut and dry as you may think. I have serious reservations about long term bunker living. How effective would it actually be? How mind-numbing would it be? Having a short-term bunker or storm shelter, on the other hand, is an idea that I can get behind. Even in a civil unrest scenario, it may be best to spend your nights in a hidden bunker on the property in case vandals show up. This article works from the very beginning of building a bunker, starting with finding land and getting permits.
The author goes on to discuss several important topics like food, water, and even air filtration. I really appreciate the thorough job done on these topics. You will need good answers to these issues.
The article also features a great section on escape routes. The goal is to build a shelter, not a tomb. This is good knowledge to have, particularly for those looking to save money. There are several great videos included as well. Follow the link below to check it out.