Alongside the hills and mountains of Saudi Arabia are little-known archaeological treasures, such as Al-Naslah Rock in Tabuk and Camel Rock of Al-Wajh in the northwest — eye-catching “landmarks that document the land’s heritage,” according to one expert. Eight-meter-long Al-Naslah Rock appears to have been sliced in half. Historians and geologists have been unable to identify the cause of the split, though centuries of erosion caused by sand and strong ...