All sorts of ideas have been put forward over the decades. Iron pillar of Delhi or Ashoka Pillar is 7 meters high structure in the Qutub Minar complex in Delhi, India. saiko3p – stock.adobe.com ...

Can an iron structure stand tall for 1,600 years without rusting, despite being exposed to the elements? It seems implausible, considering the supposed lack of technology at the time of its ...