Iran's missile base near Yazd, located 500 meters deep inside a mountain, is designed to be more of a fortress than a typical bunker. Carved from hard Shirkuh granite, the base is resistant to powerful bunker-buster bombs like the American GBU-57. This facility is part of a broader network of underground missile cities across Iran, which allows the country to maintain its missile capabilities despite ongoing strikes from US and Israeli forces. Reports indicate that Iran has launched missiles even after being targeted multiple times, with thousands of drones and missile launchers still operational. The resilience of these underground systems is attributed to their deep construction and the use of blast-resistant designs, making them difficult to destroy. Analysts emphasize that simply bombing these sites is insufficient, as multiple strikes and detailed intelligence are required to effectively neutralize them. Iran's strategic investments in underground infrastructure have fortified its military position, allowing it to threaten regional adversaries while retaining significant operational capabilities.