The Jovana

Deep in the Nambir desert there is a people known as the Jovana. These nomads range far and wide throughout the northern desert, following the buffalo who feed on the dry grasses that grow here and there seasonally.  Their annual journey begins in Adrexanil where, freshly socked with horses, camels, and other goods, they travel up the Ilne river as far west as it goes. The buffalo go before them, leading the way to the western hills and for some the ocean beyond. As summer comes, the buffalo turn north for cooler temperatures and more moisture for the grasses to grow. The Jovana follow them to the northern mountains and then east along the chain, finally heading south to Adexanil and trading there once again.
As they progress on their annual journey, the Jovana collect various articles that they use for trade with the Bicara. Only the tribes know the locations of the highly sought after herbs, insects, and stones. They collect the cochineals to make red dyes. Indigo plants are traded to the blue dyers in Adrexanil. Tenakla root produces a blue dye that turns red in the rain. Tannano seeds can produce yellow to orange color depending on the time of year the seeds are picked. Ebony bark gives cloth a black hue. There are places where gems are scattered on the ground or fall out of the sides of hills. The Jovana say they even know of small streams of gold! The Jovana also bring in medicinal herbs, some of which cannot be found anywhere other than the Nambir. For instance, there is a powder that instantly stops a wound from bleeding.  A salve that blocks pain while promoting rapid healing, leaving no scars. Along with this, there are cacti that are used by clerics to aid in contacting their Gods or by magicians to better maintain their concentration. 
All in all, the Jovana live a life of freedom from tyranny, all that they need to live, and profits made from weeds, bugs, and rocks. It is not an easy life as they are constantly at risk of dehydration and possible starvation, but a rewarding life for those souls who brave the hazards of the Nambir.