I have heard that Pindadaan is given in Gaya. Why can't "any place" be suitable for Pindadaan? Does Gaya (or Pinda-eligible places) contain any sort of spiritual momentum or subtle spiritual forces, which transmit the offering to the departed soul?
Like for example Kumbha Mela is only held in the 4 places where Amrit was spilled. That's why Kumbha Mela cannot be held anywhere else.
Another example would be 51 Pithas of Sati's organs. No other place could be eligible for being qualified as Shakti Pith.
So, is there anything special about Gaya (or other Pinda-eligible places)?