Most bunkers are located below ground and they have an extremely good protection in case of tornadoes, armed attacks or even bombs. While some bunkers are specially designed for military purposes, there are some that have gone from the standard military design (bunkers made for war time), to prepper design. Preppers use underground bunkers against nature rage, keep their food and water supply safe and ultimately have their family SAFE. When a house is purpose-built with a bunker, the normal location is a reinforced below-ground bathroom with fibre-reinforced plastic shells. Very important to remember, is that a bunker’s doors must be at least as strong as the walls surrounding it. If you consider building an underground bunker to survive in, for a prolong time, then you must consider a ventilation system.
Building a survival shelter is an absolute priority, if you face a survival situation in harsh or unpredictable weather. A good shelter must protect you from the elements and be comfortable enough for resting and sleeping. Most people cannot survive unprotected from rough weather for more than a few hours.