The mountains of the East-Zagros, the Kuh-i-Jupar (), Kuh-i-Lalezar () and Kuh-i-Hezar () do not currently have glaciers. Only at Zard Kuh and Dena some glaciers still survive. However, before the Last Glacial Period they had been glaciated to a depth in excess of , and during the Last Glacial Period to a depth in excess of . Evidence exists of a wide glacier fed along a long valley dropping approximately along its length on the north side of Kuh-i-Jupar with a thickness of . Under conditions of precipitation comparable to current climatic record-keeping, this size of glacier could be expected to form where the annual average temperature was between , but since conditions are expected to have been dryer during the period in which this glacier was formed, the temperature must have been lower.