This actually sounds like bad news.
Many people have claimed that underground tunnels are so sturdy that even bunker-busting bombs would only create small holes without causing a collapse. They've also argued that any debris could be easily cleared for a quick recovery.
However, in reality, when hit by US bombings, tunnels have suffered massive collapses, leaving no choice but to dig from the outside to access other entrances.
As proven by Israel's missile attacks on Iran, the guided bombs and missiles used by the West are far more powerful than previously, optimistically assumed.
In a real crisis, with daily heavy bombings, there would be no time for recovery. The vast equipment and personnel in underground bases risk being buried alive as all passages collapse, leading to complete annihilation.