abstract:An Nafud or Al-Nefud or The Nefud (Arabic,صحراء النفود, ṣahrā' al-nefud) is a desert in the northern part of the Arabian Peninsula at , occupying a great oval depression. It is 290 km (180 miles) long and 225 km (140 miles) wide, with an area of 103,600 km² (40,000 square miles).