Yellowstone National Park U.S National Park Service Visit Yellowstone and experience the world s first national park Marvel at a volcano s hidden power rising up in colorful hot springs, mudpots, and geysers. Yellowstone National Park Yellowstone National Park is an American national park located in Wyoming, Montana, and Idaho.It was established by the U.S Congress and signed into law by President Ulysses S Grant on March , Yellowstone was the first national park in the U.S and is also widely held to be the first national park in the world The park is known for its wildlife and its many geothermal features Park Roads Yellowstone National Park U.S National Park Yellowstone has five entrance stations It takes many hours to drive between these entrances, so be sure to check the status of roads at the entrance you intend to use Most park roads are closed to regular vehicles from early November to mid April see dates below when the park switches to My Yellowstone Park Plan your Trip to Yellowstone Bears in Yellowstone National Park Yellowstone is one of the few places in the lower U.S where you can see grizzly bears Bears typically roam Yellowstone between March and November. Reservations Yellowstone National Park Lodges Find information about making direct reservations for all in park lodging and camping in Yellowstone National Park Browse upcoming facilities improvements. Yellowstone National Park America s First National Park In Yellowstone, the wonders surrounding you are unlike anything else Our first national park is a true marvel to behold visiting Yellowstone is like stepping into another world Yellowstone National Park, America s first National Park, offers truly unique experiences like spectacular hiking trails Yellowstone National Park Lodges At Yellowstone National Park Lodges, you re invited to discover or rediscover the magic of the world s first national park, Yellowstone As proud stewards of the park and this truly extraordinary American wonder, we ll help you find your ultimate Yellowstone experience all while working to protect and preserve the park for future generations. About Yellowstone National Park Its Places, Weather Start here for basic information about the park such as where Yellowstone is located and which of the park s five entrances you should take Find answers to the most frequently asked questions such as what to pack and how close you should get to wild animals.Are you planning a trip far in advance Fly Fishing In Yellowstone National Park South of the upper closure bridge is a deep canyon of the Firehole River.Between this bridge and Kepler Cascades is a fluvial environment that is highly conducive to the success of spawning trout.Flows, chemistry, spectral intensity, and gravel size contribute to this being a destination for spawning trout. Yellowstone Caldera The Yellowstone Caldera is a volcanic caldera and supervolcano in Yellowstone National Park in the Western United States, sometimes referred to as the Yellowstone Supervolcano.The caldera and most of the park are located in the northwest corner of Wyoming.The major features of the caldera measure about by miles by km.