Bunkers are fortified structures designed to provide protection during military conflicts or natural disasters. They are typically built underground or partially underground to shield occupants from explosions, gunfire, or other threats. Bunkers can vary in size and complexity, ranging from small shelters to large facilities equipped with supplies and living quarters. In addition to military use, bunkers have also been repurposed for civilian purposes, such as emergency shelters during natural disasters or as storage for nuclear materials. Some people even convert old bunkers into private homes or survival retreats, highlighting their versatility beyond their original military function.