Yellowstone,  the world's first national park opened in 1898. It was meant to be a wild Utopia. But like a lot of things we try for the first time it doesn't always work out. Huge numbers of animals were lost big mistakes were made. But big lessons were learned, too. Now the big predators are returning and in a daring experiment the wolf has been reintroduced to Yellowstone. Beautiful and resilient this unique corner of the American West shows. How with a little help.Yellowstone is the product of a violent past. Hurled up by the world's greatest volcanic explosions and endlessly carved away by water and ice this is a land of dramatic statement. Yellowstone sits across a 75km wide, active volcano in the heart of the American Rockies. It's natural, volcanic wonders like the "Old Faithful" geyser led to Yellowstone becoming the world's first National Park in 1872.