Hidden bunkers are secretive structures designed to provide shelter and protection, often built underground or concealed within natural landscapes. They can serve various purposes, including military defense, emergency preparedness, or as safe havens during disasters. These bunkers are typically equipped with essential supplies, communication systems, and sometimes even living quarters. Many hidden bunkers are constructed using reinforced materials to withstand attacks or natural disasters. Some are associated with historical events, such as the Cold War, when governments built them to protect leaders and civilians. Today, they can also be found in survivalist communities, where individuals prepare for potential crises.