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Jabal Tuwaiq or Tuwaiq Escarpment is a narrow escarpment that cuts through the plateau of Najd in central Arabia, running approximately 800 km from the southern border of Al-Qasim in the north to the northern edge of the Rub' al Khali desert near Wadi ad-Dawasir in the south. It is 600 m high and also has a Middle Jurassic

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