Anyone know how old Wadi-us-Salaam (Valley of Peace)is??? Its the largest MUslim graveyard in the world and was the centre of feirce fighting during the Battle_of_Najaf. But I can't find a date for it.
It is needed very old. If I remember correctly, A couple of early prophets (Hud and Saleh) are buried there. Abraham also visited this place as well.
I do not know if it is older than Janat-ul-Baqi, but it is among the oldest graveyards.