By: Mark Leon Goldberg on September 17, 2012There is a herculean effort to provide for the basic humanitarian needs of 60,00 people in Yida refugee camp in South Sudan, with the UN and NGO partners like Doctors without Borders are leading this charge. One of the main challenges is simply logistic: Yida is currently inaccessible by road, but food supplies were about to run out.The solution? See below.Over the past year, as the Sudanese government intensified a military campaign against militias in the Nuba mountain region, many thousands of refugees started streaming across the border to South Sudan. This was probably by design: As was evident in Darfur, the Sudanese government’s style of counter-insurgency warfare includes attacks against the ethnic groups from which the militias draw their members.Population displacement was the Sudanese governments goal–and they succeeded. As many as 105,000 people fled Sudan’s Nuba region for South Sudan. At least 60,000 refugees have fled across the border to Yida Camp in South Sudan.This is a terrible place for a refugee camp. It is prone to flooding; access to clean drinking water is limited; and the rainy season makes delivering supplies to Yida all but impossible. It is also close enough to the Sudanese border that the Sudanese air force sometimes bombs the camp. Still, the UN and its partners are basically the only groups trying to keep the people living in this refugee camp alive and as healthy as possible.