An Nafud An Nafud An Nafud or Al-Nefud or The Nefud () is a desert in the northern part of the Arabian Peninsula at , occupying a great oval depression. It is long and wide, with an area of . The Nafud is an erg, a desert region located in the north-central Saudi Arabia. Noted for its sudden violent winds, which account for the large crescent-shaped dunes. The sand in the Nafud is a brick-reddish color. Rain comes once or twice a year. In some lowland areas, namely those near the Hejaz Mountains, there are oases where dates, vegetables, barley, and fruits
Tanami Desert is classified as an interim Australian bioregion, comprising . According to government commissions, the Tanami desert is uniquely "one of the most important biological areas to be found in Australia particularly as it provides refuge for several of Australia's rare and endangered species." The species that are found include: Significant bird species include: There are several mines in the Tanami Desert including: The Tanami Desert is a Kukatja and Walpiri country. The Tjurabalan live at the edge of the desert. In July 2012, of the desert area (38% of the total bioregion) was declared an indigenous protected area or conservation