Behind the compound at Persepolis, there are three sepulchers hewn out of the rock in the hillside. The facades, one of which is incomplete, are richly decorated with reliefs. About 13 km NNE, on the opposite side of the Pulvar River, rises a perpendicular wall of rock, in which four similar tombs are cut at a considerable height from the bottom of the valley. Modern-day Iranians call this place "Naqsh-e Rustam" ("Rustam Relief"), from the Sasanian reliefs beneath the opening, which they take to be a representation of the mythical hero Rostam. It may be inferred from the sculptures that the occupants of these seven tombs were kings. An inscription on one of the tombs declares it to be that of Darius I, concerning whom Ctesias relates that his grave was in the face of a rock, and could only be reached by the use of ropes. Ctesias mentions further, with regard to a number of Persian kings, either that their remains were brought "to the Persians," or that they died there.