Dasht-e Kavir (Persian: دشت كوير), also known as Kavir-e Namak or Great Salt Desert is a large desert lying in the middle of the Iranian plateau. It is about 800 kilometers (497 mi) long and 320 kilometers (198 mi) wide with a total surface area of about 77,600 square kilometers (~30,000 mi²), making it the Earth's 23rd largest desert. The area of this desert stretches from the Alborz mountain range in the north-west to the Dasht-e Lut ("Emptiness Desert") in the south-east and is partitioned between the Iranian provinces of Khorasan, Semnan, Tehran, Isfahan and Yazd. It is named after the salt marshes (kavirs) located there.
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