The natural world is an incredible place. There are soaring mountains and rolling sand dunes, spectacular beaches and shimmering lakes, steaming geysers and bubbling volcanoes—and so much more.

Earth’s natural wonders are among the most extreme places to live on the planet. Earth’s natural wonders are among the most extreme places to live on the planet. From soaring mountains to deep jungles ...

In some of the natural wonders, people must push themselves to the limit to survive. In some natural wonders, people must push themselves to the absolute limit in order to survive. For the people who ...