Qal'eh Hasan Ali is a maar-producing volcanic field located southeast of Kerman Province, Iran. The field is presumed of Quaternary age, though it has produced no historic eruptions. Consisting of 14 maars each of different size, its most significant crater is Great Crater, about 1.2 kilometres (0.75 mi) in width and 200–300 metres (660–980 ft) in depth.