. >> this is tambopata national reserve- in madre de dios - the mother of god. it's one of the world's most diverse ecosytems - and one of peru's most threatened. this is lapampa - in the buffer zone of the tambopata reserve. it's been devastated by illegal mining. but a small community of artisanal miners known as the manuanis are hoping to bring the rainforest back to la pampa. they are working with peruvian ecologist francisco roman. >> the only way into their camp is on the back of a motorbike, on a flooded dirt path. >> we've been driving for miles into what should be pristine rainforest. but instead it looks like this. >> skeletal remains hint at the forest that used to thrive here. >> behind me i can hear a macaw calling and i think there's a nest up in that tree. that's the problem with these mines - as they deplete this area, they just keep pushing further and further into the forest and the wildlife has nowhere to go. >> but can this land ever return to the pristine rainforest it once was? the prospect is daunting, work that has never been done before w