. >> this is jeffrey barbee reporting from the hluhluwe-imfolozi park in south africa for link tv. >>ecuador's highlands, indigenous communities fight foreign gold mining companies in an effort to save something even more precious than gold to them: their water. constantino de miguel reports. >> ecuador is a south american country with a booming economy driven, in large part, by the world's appetite for its raw materials. ecuador is blessed with some of the richest biological diversity in the world. the wealth of its fauna and flora can be seen in the kimsakocha wetlands in the andes highlands. but beneath the ground there is gold and copper that are set to be exploited on a grand scale. the ecuadorian government awarded concessions to foreign companies to exploit this region, despite local opposition by peasants and indigenous communities whose agriculture depends on the local water resources. the 2,000 families that live on the kimsakocha asked the government to withdraw the mining concessions in 2007. but when ecuadorian presiden rafael correa refused, this set off an uprising agai