Impossibility of washing and shrouding the deceased

A: It is well-known that the Shar`y (Islamic legal) ruling is that it is Wajib (obligatory) to wash, shroud, bury and offer Janazah for the deceased. In case washing the deceased is unfeasible, an alternative, i.e. Tayammum (dry ablution with clean earth), should be employed and if shrouding is unfeasible, it will be waived. Moreover, if offering Janazah for the deceased is unfeasible, it should be offered over the grave and if one dies in a country whose citizens did not offer Janazah for him, Salat-ul-Gha'ib (Funeral Prayer in absentia) should be offered. Seemingly, it is apparent according to the question that those present at the time of your father's death did their best but could not bring him down from the mountain. In this regard, Allah (Glorified and Exalted be He) says: Allâh burdens not a person beyond his scope. He (Glorified and Exalted be He) also says: So keep your duty to Allâh and fear Him as much as you can Since death took place a long time ago, you do not have to do any of the above-mentioned things.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.