There are no roads to these areas so the only way to travel is on foot or on horseback along the steep slippery jungle trails and across the many winding rivers.

There are no roads to these areas so the only way to travel is on foot or on horseback along the steep slippery jungle trails and across the many winding rivers.

The view out across the forest from the village of San Rafael.

The view out across the forest from the village of San Rafael.

People choose to live in these remote inaccessible areas because it gives them access to fresh forest to burn each year to generate a good harvest - the effects of this are starterlingly obvious as you look out across the valley and the forest is rapidly disappearing.

People choose to live in these remote inaccessible areas because it gives them access to fresh forest to burn each year to generate a good harvest - the effects of this are starterlingly obvious as you look out across the valley and the forest is rapidly disappearing.

Fallen giants - the stumps of huge primary rainforest trees cleared to make way for slash and burn farming.

Fallen giants - the stumps of huge primary rainforest trees cleared to make way for slash and burn farming.

Passing freshly slashed and burnt areas of forest as we make the journey up to San Rafael community.

Passing freshly slashed and burnt areas of forest as we make the journey up to San Rafael community.

Luis, Inga Foundation's agronomist, explaining the idea of nitrogen fixing to 2 brothers who are planting their plots with Inga alleys.

Luis, Inga Foundation's agronomist, explaining the idea of nitrogen fixing to 2 brothers who are planting their plots with Inga alleys.

Normally, slash and burn farmers have to move every few years meaning you can't pass on your land to your children, but Inga changes that and creates the possibility that you can leave you kids with an inheritance.

Normally, slash and burn farmers have to move every few years meaning you can't pass on your land to your children, but Inga changes that and creates the possibility that you can leave you kids with an inheritance.

One of the 2 brothers in San Rafael who are working to convert their slash and burn plots to Inga alley cropping. They are already growing coffee using Inga and are now working on planting 2 large fields of Inga alleys to provide the families with maize.

One of the 2 brothers in San Rafael who are working to convert their slash and burn plots to Inga alley cropping. They are already growing coffee using Inga and are now working on planting 2 large fields of Inga alleys to provide the families with maize.

San Rafael farmer Don Benino with the family's newly planted Inga seedlings.

San Rafael farmer Don Benino with the family's newly planted Inga seedlings.

The whole family pitching in to help build an A-frame. With this brilliantly simple piece of technology they can measure the gradient of their steeply sloping fields and plant their Inga alleys along the contours to protect the soil from erosion.

The whole family pitching in to help build an A-frame. With this brilliantly simple piece of technology they can measure the gradient of their steeply sloping fields and plant their Inga alleys along the contours to protect the soil from erosion.

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