Many of the trees in Yosemite park valley are not native. Even the famous Yosemite valley is the result of generations of Native Americans burning to promote the growth of grass for the manufacture of ornaments such as basket weaving. Floods, land & rock slides, fires, and man are influencing the trajectory of Yosemite park. Today, natural forces are still chipping away at the shape of Yosemite National Park. Yosemite Park is the result of a Glacier Tanya sliding down hill as it melted and carving the granite stone that formed a “V” shaped valley into a “U” shaped valley. Yosemite park has taken millions of years to be created and it is constantly evolving. One of America’s favorites, Yosemite Park is located in California close to the border with the state of Nevada in the Sierra Nevada mountain range. Tours from San Francisco to Yosemite National Park generally stop at the Yosemite launch which is a short distance from the Yosemite Village. Tours of the valley can be taken at the visitors center. Yosemite National park’s visitors center is located in the Yosemite Village along with shops, restaurants, the Yosemite Museum, the Indian Village, and the Ansel Adams Gallery. Yosemite Valley’s seven square miles consist of a main loop that most tour buses follow stopping at the main points of interest. Yosemite National park gets close to 4 million visitors per year. Yosemite National park is one of California’s and America’s most important national reserves. The most popular destination in Yosemite is a Yosemite Valley where the most famous sites of the park are concentrated such as Half Dome and EL Capitan. Yosemite National Park with 748,542 acres of land was established in 1890.