Mohenjo-Daro, an ancient city located along the Indus River, was once a treasure of human civilization. However, its sudden disappearance and the various speculations surrounding the reasons for its demise have turned it into an unsolved historical mystery. Some believe it may have fallen victim to nuclear warfare, while others suggest theories involving earthquakes, plagues, and invasions by other tribes. Regardless of the explanation, the disappearance of this ancient city prompts us to ponder how once-thriving civilizations can vanish in an instant.