The Kabaa ye Zartosht is an Achaemenian era Zoroastrian temple at Naqsh-e Rostam, Iran, in front of the royal tombs of King Darius Ist the Great, Xerxes Ist the Great, Artaxerxes Ist Makrocheir, and Darius II Ochos. Built with massive marble stones, the temple was still used during the second persian empire (Sasanian era) as testify a long royal inscription writen in Pahlavi attributed to king Shapur Ist and another from the hight priest (Moebed) Kartir. Fire temple (Atashkade) or guardian of the royal tomb, its exact function remains uncertain. The ruins of a similar building named Zendan-e Salman (Salomon's prison) can be seen at Pasargades, the ancient capital of king Cyrus the great (see <a href="https://www.flickr.com/photos/dynamosquito/2379877592)">www.flickr.com/photos/dynamosquito/2379877592)</a>.