The history of the flooding of the Harappan civilization, the lower Indus Valley, and especially Mohenjo-daro

 In 1965 it was mentioned that the argument over what happened to the Harappan civilization was old and quite contentious. 

https://www.penn.museum/sites/expedition/civilization-and-floods-in-the-indus-valley/

None of this will be found on Wokepedia

The arguments of course continue