The Niyamgiri Hills, which range over 250 kilometres across the districts of Rayagada, Kalahandi and Koraput in Orissa, are home to more than 8,000 Dongaria Kondhs and other tribals who are now wholeheartedly engaged in what they have been doing for centuries: defending their hills, forests and streams. This time, however, they face a more formidable enemy than ever