According to Arrian, this was the largest city of Hyrcania. The term means "the yellow city" and it was given to it because of the great number of orange, lemon, and other fruit trees that grew in the outskirts of that city. Hence it is by D'Anville, Rochette, and other geographers, identified Saru, which Pietro Della Valle says in his "Travels" means "the yellow city". It is probable that Zadracarta and Saru are the same with the Syringis of Polybius, taken from Arsaces II by Antiochus the Great, in his vain attempt to reunite the revolted provinces of Hyrcania and Parthia to the Syrian crown. Han Way, who visited Saru in 1734, makes mention of four ancient Magian temples as still standing then, built in the form of several rotundas, each thirty feet in diameter, and about 120 in height. However Sir William Ouseley, who had travelled to the site in 1811, has speculated that these to be masses of brick masonry of the Mohammedan age. Out of four, one of the rotunda is still standing since the rest were overturned by an earthquake. This and other remains of similar buildings, bear the names of Fereydun, Salm, Tur, and other mythical figures, whose celebrity had been established about 2000 years prior to their erection. One of them Avas called the tomb of Kaus, and was supposed to contain the ashes of Cyrus the Great. Sir William Ouseley thinks it was that of Kabus, or Kaus, the son of Washmakin, who governed Mazanderan in the fourth century of the Hejira. It was at Saru that the ashes of the youthful hero, Sohraub, were deposited by his father, Roostum, after he had unwittingly slayed Sohrab in a hand-to-hand battle. Saru is celebrated for its abundance of gardens, which emit a pleasing fragrance in the vernal and summer months. An oriental proverb declares that the "gates of paradise derive sweetness from the air of Sari and the flowers of Eden receive their fragrance from its soil". The city was again a regional capital in the Sassanid dynasty era.