(AFP) – The conflict in South Sudan and its massive population displacements have produced many names synonymous with misery. The latest is Aburoc, a northeastern village where aid workers face the toughest of challenges. In the space of a few days, this remote settlement in Upper Nile State, close to the Sudanese border, grew by 30,000 as men, women and children fled yet another government offensive. Few choose to live in Aburoc, a desolate ash-grey landscape of flies and dry rivers. The earth, bone dry now, is “black cotton” a type of soil that turns into a sucking quagmire with the first of the year’s rains.