Ani
Already being a student, since 1907 Kalantar participated the archeological excavations of Nicholas Marr in Armenian medieval capital Ani, in 1914 was appointed the head of the XIIIth Ani Archaeological excavation campaign. In 1918 he organized the evacuation of about 6000 items from the Ani Museum, which are currently in State Museum of Armenian History in Yerevan. He was the last archaeologist to describe monuments, mostly in Ani region, which did not survive.
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