Earth's Natural Wonders are parts of the natural world that nature has carved on such a scale, that they beggar belief - vast mountain ranges, impenetrable rainforests and dazzling tropical islands.

In many of the earth's natural wonders there is an abundance of animals. These can be a devastating threat to the people who live there, or they can provide a means of survival, but often at a high price.

In some of the world's most spectacular natural wonders, people push themselves to the limit in order to survive. For the people who call these extraordinary places home, survival requires skill, ingenuity and bravery.