Purim, the tunnels of memory (71 mn)

In South India, and particularly in Kerala, the origins of the christian communities date back to the evangelisation by the apostle Thomas, who, according to tradition, landed on the Malabar coast in 52 A.D. 

This film tells the story of redressing a problem. People in Europe have been straightening rivers for hundreds of years, drying floodplains and destroying the landscape near rivers.
This has resulted in a drastic decline in the variety of species near and in rivers. But there is hope on the horizon from an unexpected source: of all things, as a result of human intervention, which played a part in destroying the natural surroundings: gravel pits.