The most crucial question is whether the science is perfect? The fact is none of the scientific theories are 100% prooved and Geology is still far behind in giving any conclusive evidences. It is not possible to claim accuracy of thing that happened few decades back, forget about 1000 of years back. The science can merely study what is there at present and the current composition of substance there. It cannot prove any of the histoic events occurred in the past.
For whatever reason, the site has a very big heritage value. Historic references and Mythology (whether true or not) adds value to this heritage. So, I am in strong support of preserving it as it is really unique.