Incense Route – Desert Cities in the Negev route in the Negev Region of Israel, which included towns, forts, caravanserai and the irrigation system in desertic areas with links to the Mediterranean, has been inscribed as a cultural heritage site of the UNESCO's World Heritage List under Criteria (iii) as confirmation of the economic, social and cultural importance of frankincense to the Hellenistic-Roman world, and Criteria (v) for development along the route in severe desert conditions. The site was inscribed on 15 July 2005 in the meeting of the World Heritage Committee of UNESCO. The network of the Incense Route consisted of trade routes that encompassed towns and
Mojave Desert needed for survival in the flora of the Sonoran Desert, which has an overlap in its major flora, such as the creosote bush ("Larrea tridentata"). The soil types in the Mojave and Sonoran deserts are mostly derived from volcano, specifically the areas in California. As the topography goes down, particle sizes decreases as you move down the gradient, where you can also find low alkalinity. These erosional gradient is a habitat for many plant communities. As you go up the gradient of the desert, you will find more pediment and alluvial fan soil. In this areas, the flora is mostly