Ancient towns in Saudi Arabia - Wikipedia
Al-Ukhdūd (Arabic: الأخدود ), formerly known as Raqmat (Arabic: رقمات ), is located in the south of Saudi Arabia in Bir Hima/Najrān region, about 1,300 km (810 mi) to the south of Riyadh. Exploration of the city was begun around 1997 by group of Saudi historians.