The Sierra Nevada's mountain range contains some of the most amazing wonders found on the planet. Filled with such notable geographic features including Lake Tahoe, three National Parks, two National Monuments and seemingly endless wilderness areas, the Sierras are truly spectacular in every-sense of the word. Enjoy breath-taking aerial views as you soar over its majesty. Discover the history and geology first-hand through in-depth interviews with the park rangers and ground tours that take you through the park. Rich in history and known as the place of the gold discovery, the home of modern mountain climbing and the birthplace of America's national parks system, this modern marvel is over 100 million years in the making. This is Yosemite country.