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Yosemite National Park the national park located in the counties of Madera Mariposa and Tuolumne State of California USA. Occupies an area of ​​3,081 km2 and is on the western slopes of the Sierra Nevada mountain range . It is famous for its landscapes and nature: impressive granite rocks waterfalls rivers with clear water Groves of sextoys and rich biodiversity. In 1984, the park received the status of World Heritage under the auspices of UNESCO. It was originally designed as a national park. Among his organizers is one of the first defenders of the idea of ​​the reserves John Muir. Every year about 3 million people visit the park; Most stop only in the Yosemite Valley.

The park is one of the largest and undivided areas of wildlife conservation in the Sierra Nevada region; Local fauna and flora is extremely diverse. Located at an altitude of 600 to 4000 m above sea level the park includes five main vegetation zones: dense thickets of bushes and oaks lower mountain forest, upper mountain forest subalpine and alpine belts. Of the 7,000 species of plants growing in California about half occur in the Sierra Nevada mountains and a fifth in the park itself. Here as a result of a rare geological formation and unique soils a convenient place for the growth of more than 160 rare plant species.

The geological structure of the park's territory is characterized by the presence of granite and remains of even more ancient stone rocks. About 10 million years ago the mountains of the Sierra Nevada rose and then bent so that the western slope became more gently sloping and the eastern slope towards the mainland was more steep. The rise has increased the steepness of the waterways and riverbeds resulting in the formation of deep and narrow canyons. About a million years ago the snow and ice accumulated on the tops formed glaciers in the regions of the present subalpine and alpine belts thus lowering the valleys of the rivers down the slope. In the first ice age the ice thickness in the glaciers was up to 1200 m.

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