Al Jawf
Dumat al-Jandal (, ), also known as Al-Jawf or Al-Jouf (), is an ancient city of ruins and the historical capital of the Al Jawf Province, northwestern Saudi Arabia. It is located 37 km away from Sakakah. The name Dumat al-Jandal means literally "Dumah of the Stone", since this was the territory of Dumah, one of the twelve sons of Ishmael; the name Al-Jawf means "depression", referring to Wadi Sirhan. The city's ancient Akkadian name was "Adummatu". Dumat al-Jandal has a boundary wall which is considered a historical site. Moreover, there is an oasis that has a number of ruins.