Mount Khwaja or Mount Khwajeh is a flat-topped black basalt hill rising up as an island in the middle of Lake Hamun, in the Iranian province of Sistan and Baluchestan.
The trapezoid-shaped basalt lava outcropping, located 30 km southwest of the town of Zabol, rises to 609 meters above sea level and has a diameter ranging from 2.0 to 2.5 kilometres. It is the only natural height in the Sistan area, and is named after an Islamic pilgrimage site on the hill: the tomb and shrine of Khwaja Ali Mahdi, a descendant of Ali ibn Abi Talib.
Mount Khwaja is also considered an important archaeological site. On the southern promontory of the eastern slope, the ruins of a citadel complex - known as the Ghagha-Shahr - with its remains of a fire temple date to pre-Islamic Iran.
Coordinates 30°56'34.583" N 61°14'45.48" E