In addition to its mosques, shrines, and religious schools, the city is known for its cemeteries. Outside the old city walls, over the barren sand plateau, stretch great fields of tombs and graves, for pious Shiʿis believe that Najaf is so holy that to be buried there is to ensure entry into paradise.
In addition to the city’s population, there is frequently a large floating population of pilgrims, who sometimes bring the bodies of the deceased for interment or come with elderly and infirm family members who wish to live their last days in the holy city before being buried there. Political instability has sometimes interrupted the pilgrimage to the city, but during more-stable times the number of those visiting the city can, in the proper season, outstrip the local population.
Najaf governorate is a flat region extending from the Euphrates River in the northeast to the Saudi Arabian border in the southwest.
According to Britannica.com