 Its capital was the city of Raqmu in Jordan, and it included the towns of Bosra, Mada'in Saleh (Hegra), and Nitzana.Raqmu, now called Petra, was a wealthy trading town, located at a convergence of several important trade routes.One of them was the Incense Route which was based around the production of both myrrh and frankincense in southern Arabia, and ran through Mada'in Saleh to Petra.