I heard the theories about what could have destroyed this civilisation so many years ago: a violent massacre perhaps, or flooding and disease, or even more fantastic, some kind of explosion, a fireball or meteorite. And now it's being destroyed by something quite banal - neglect and a lack of interest. Next year, a Bollywood film of some considerable scale, called, simply, Mohenjo Daro, will be released. Quite possibly that will provoke more interest in this ancient site.