The Lut Desert, widely referred to as Dasht-e Lut (Persian: دشت لوت, "Emptiness Plain"), is a salt desert located in the provinces of Kerman and Sistan-Baluchestan, Iran. It is the world's 33rd-largest desert, and was included in UNESCO's World Heritage List on July 17, 2016. The name is derived from 'Lut' which means bare and empty in Persian and 'dasht' which means plain in Persian. The surface of its sand has been measured at temperatures as high as 70.7 °C (159.3 °F), making it one of the world's driest and hottest places.