Yellowstone is no ordinary wilderness, it is the worlds first national park and one of the worlds last and most spectacular wildernesses a global icon of natural beauty. It is also home to some of the richest wildlife beyond the plains of Africa. Vast panoramas are coupled with intimate close ups as this landmark 3 part series reveals the grandeur of this unique place as its animals struggle to survive over the course of three vividly changing seasons. The daily struggles of the wildlife are intimately linked to Yellowstones greatest secret: that sleeping right beneath the snow is probably the worlds largest volcano. As seen on ABC TV.