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The United States is defined in part by its majestic wild places, and the preservation of these landscapes ensures that it will always be so. The geysers of Yellowstone, waterfalls of Yosemite, and natural wonders of four other great American national parks are beautifully captured... Read Full Overview

Yellowstone National Park is one of the United States' most storied national parks. Created in 1872, the park's breathtaking geothermal wonders and diverse ecosystems draw millions of visitors to Wyoming, Montana, and Idaho every year. This intermediate-level survey, filled with... Read Full Overview