دانلود مستند سه بعدی World Natural Heritage Usa Yellowstone Nationalpark 2012

Yellowstone National Park is a national park in the United States and the states of Wyoming, Montana and Idaho. It was set up on March 1, 1872 by the US Congress and as a national park in Wyoming, then expanded to Montana and Idaho. The park is considered to be the world's first national park, and its reputation is due to its wildlife and its geo-energy characteristics, and especially to its popular effect, Elda Feithful. The National Park has many ecosystems, but mountain forests form the dominant ecosystem. Below the Pacific Yellowstone National Park in the United States, there is a huge reservoir of volcanic lava. The reason for the existence of hot springs and hot springs are the main features of this area.