“Once a thriving international trade hub, the archeological site of Hegra (also known as Mada’in Saleh) has been left practically undisturbed for almost 2,000 years. … Hegra was the second city of the Nabataean kingdom, but Hegra does much more than simply play second fiddle to Petra: it could hold the key to unlocking the secrets of an almost-forgotten ancient civilization.” – Smithsonian Magazine