The Tomb of Xerxes I is a Catacombs located in Marvdasht.This Tomb is part of the Naqsh-e Rostam And This is Xerxes I's Tomb.
Wikipedia https://en.wikipedia.org/wiki/Tomb_of_Xerxes_I
Address Iran
Coordinates 29°59'21.392" N 52°52'32.533" E