jeff barbee reports. >> poaching has become a crisis. number of rhino killed forheir horn s gone from 13 in 2007, to over 1,000 in 2013 alone. but a new danger to the park may be even more disastrous than the widespread poaching problem in the country. a new open-cast coal mine on the southern border of the park threatens this, africa's most important rhino breeding ground. park officials here worry that this new danger could be a deep dark hole for rhino conservation, because the mine will pollute the air with dangerous gases, like toluene and benzene, and blotoxic coal dust over this wilderness area. the mine will also discharge acid mine wer laced with sulfuric acid and radioactive byproducts into the umfolozi river, where the park's animals and the livestock of the surrounding community all drink. >> and when we come here, we come here to kind of, like, to unwind and experience the wild, and now there's a mine happening on the edge of the wilderness, and it's diluting every experience that the peop are getting here. >> if hundreds of