Yellowstone National Park covers more than 2.2 million acres at 63 miles from North to South and 54 miles East to West. It is the home of the Old Faithful Geyser and others. Each year millions of US citizens and foreign travelers enjoy the views and unique hydrothermal features of this park. The Yellowstone region is primarily made up of boreal forests. Visitors are likely to see a number of wild animals in the park, including grizzliy and black bears, gray wolves, bison, elk, moose bighorn sheep. Entrance fees to National park are $25 per private vehicle for seven days, or $50 for one year.