Illegal gold miners in Peru are destroying thousands of hectares of the Amazon forest, home to some of the world's most important biodiversity.

Biologists are working to save wildlife in the area, as their habitats are destroyed or endangered by the gold diggers.

At the same time, stopping the mining is presenting a tough challenge for the government.

In the final instalment of a three-part series, Al Jazeera's Mariana Sanchez reports from Madre de Dios in Peru.