With unique access to the jungles and mountains of Bhutan, this thrilling 3 part natural history series goes in search of a secret tiger population which could save these magnificent creatures from extinction. Closed to outsiders for years, Bhutan is a forgotten world - no one knows how many tigers prowl the jungles and mountains here. If the rumours of a healthy population are true, it will give credence to a proposed 2000-mile long 'tiger conservation corridor': an ambitious project that would allow the last remaining big cats to move freely between Burma, India and Nepal. Travelling through the jungle on elephant back, the experts use the latest technology to track the tigers. From leach-ridden swamps to breathless, icy summits, nowhere is out of bounds. As seen on ABC1.