Dasht-e Lut is a large salt flat in southeastern Iran, recognised as a UNESCO World Heritage Site. It is one of the hottest places on Earth with recorded surface temperatures exceeding 70°C. The desert covers approximately 51,800 square kilometres across Kerman and South Khorasan provinces.

The Dasht-e Lut, known in Arabic as the Empty Quarter of Iran, has been effectively uninhabited throughout recorded history. Its extreme heat – surface temperatures have been measured at over 70 degrees Celsius in summer, among the highest ever recorded on Earth – made permanent settlement impossible. Ancient trade routes bypassed it entirely. The geological formations of the Lut, including the massive yardang fields known as the Kaluts, were shaped by millions of years of wind erosion acting on soft sedimentary rock, creating some of the most dramatic desert landforms on the planet.

The Dasht-e Lut is a UNESCO World Heritage Site recognised for its outstanding geological and geomorphological values. It remains essentially uninhabited. Satellite thermal imaging has identified it as one of the hottest surfaces on Earth. Its extreme environment makes it useful for remote sensing calibration and astrobiological research into life at temperature extremes. The surrounding provinces of Kerman and Sistan-Baluchestan are affected by dust storms originating in the Lut’s dried salt flats.