when was yellowstone designated as a world heritage site
It was the known as the first national park in the world. It was created on March 1, 1872 when United States President Ulysses S. Grant signed a law to create it. The name was taken from the Yellowstone River, which flows through the park. Yellowstone was made a UNESCO World Heritage Site in 1978.Yellowstone National Park is famous for its geysers and hot springs. The park contains about half the world's geysers.eople have lived in the Yellowstone area for about 11,000 years. Some native Americans still lived there when the first people came from Europe came through in 1807/1808. John Colter, a trapper, came within the Lewis and Clark Expedition and visited a large area which was unknown to the western world at that time.