The hidden Mawan Valley is considered to be one of the most important archaeological sites in Saudi Arabia. Located near the city of Ad-Dilam, south of Riyadh, it is also an area of stunning natural beauty. #Mawan Valley is one of the most famous environmental valleys, descends from the Tuwaiq Mountains and is located to the west of Dalam, south of Riyadh, Wonderful scenery and ancient forts and one of ...