law: Ancient Monuments and Archaeological Sites and Remains Act, 1958
  
  35.Ancient monuments, etc., 
  which have ceased to be of national importance.-
  
  If the Central Government is of opinion that any ancient and historical
  
  monument or archaeological site and remains declared to be of national
  
  importance by or under this Act has ceased to be of national importance, it
  
  may, by notification in the Official Gazette, declare that the ancient and
  
  historical monuments or archaeological site and remains, as the case may be,
  
  has ceased to be of national importance for the purposes of this Act.