Nuclear silos are underground facilities designed to house and protect nuclear missiles. These structures are built to withstand attacks and natural disasters, ensuring the safety and security of the weapons. Each silo typically contains a single intercontinental ballistic missile (ICBM) that can be launched quickly if needed. The design of nuclear silos includes reinforced concrete walls and heavy blast doors, making them difficult to penetrate. They are often part of a larger military strategy, allowing countries to maintain a deterrent against potential threats. The presence of these silos is a key element in the concept of mutually assured destruction (MAD), which aims to prevent nuclear war.