It would be incumbent upon all sons to offer PIND DAAN(oblations) for the salvation of the soul of their ancestors. The soul could be freed from the agonies of Hell and sent to Heaven by performing Gaya Shraddha or Pind Daan in Gaya. From our Hindu Mythology,Its is believed that if any person departed from the earth,her soul is wandering in earth here and there,and they did not get peace untill his any family member is not visited gaya for performing Gaya Shradh or Pind daan for him, and it is also believed that if any person sacrifice his life by any means then he or she first of all enter the Preth yoni then enter the pitar yoni and after doing Pind daan Gaya or Gaya shraddham they got moksha under the foot of Lord Vishnu in Gaya,And it is also signifies in Padma puran,Garud puran, and shri Bhagwat Gita. and it is neccesaary to perform Gaya shraddha or Pinda daan in Gaya from our Hindu Mythology .
Departed person had in search of that his family member will do the Gaya Pind Daan or Gaya shraddha for me after the yearly sraddha .And if the Gaya sraddha is not done after the yearly shradh of any person then the soul of person is not get peace and wandering in the universe,and the soul will give cursh to her family member and creating different types of difficulties to her parents or childrens like losses in business regularly,sickness of any people regularly,e.t.c and create difficulties in any type of Good Work,This is known as Pitra Dosh, so,from Hindus Mythology,any people of the family have to perform Gaya Shradh or Pind daan in Gaya for Pitra Dosh Nivaran pooja in Gaya Ji,And the every people who is belonging from Hindu culuture have to perform Gaya shradh or Pind daan in Gaya Ji for the salavation of their ancestors or to give peace to their ancestors and to send their ancestors under the foot of lord Vishnu. After doing GayaJi Pind Daan or Pind Daan vidhi in Gaya all the difficulties which their ancestors is creating are removed because the souls of their ancestors get moksha or peace under the foot of lord Vishnu,And their ancestors blessed him as well as help in the progress of the family.
Besides Rama,other Mythological personalities who visited Gaya for the Pind-daan purpose are the Raja yudhistra,Bhisma Pitamaha, Marichi(Brahma’s son) and others.