The Gran Chaco Forest is Latin America’s second largest ecosystem. It is a mix of hot and arid scrublands, forests and wetlands, part of the River Plata basin, so large it extends into Paraguay, Brazil, Argentina and Bolivia. Large parts of the forests have already been cleared to make way for farms. Now a new highway being driven through it is heralding further change. The so called Bi-oceanic Corridor will transport the produce of cattle ranchers and soya-bean farmers in Brazil and Paraguay across to ports on the west coast. Members of some indigenous communities like the Ayoreo see it as a further threat to their way of life.

The new road is being cautiously welcomed by some members of the Mennonite Community, a Christian religious group who came to the Gran Chaco 100 years ago via Prussia, Russia and Canada and bought land from the government to farm. Will the impact of the road on the indigenous and Mennonite communities - and the environment - be worth the economic benefits? Jane Chambers travels across the Gran Chaco.

Produced by Bob Howard. The Paraguay producer was Santi Carneri.