Rivers radiate in every direction from America's first national park.  But only one named Yellowstone deserves it. 

Although its headwaters lie outside the boundaries of the declared park in Wyoming's South Absaroka Range,

 the Yellowstone River knows no boundaries.

Cutting a diagonal northeast channel across Montana for nearly 700 miles to its confluence with the Missouri River in North Dakota

 the Yellowstone River is the longest free-flowing river in the lower 48 states.

 In and around Yellowstone National Park, its prestige is cemented by natural features

 including the aptly named Inspiration Point, which overlooks Yellowstone's thunderous Upper and Lower Falls

which drop 109 feet and 308 feet, respectively, into Yellowstone's legendary Grand Canyon

The legendary Grand Canyon near Blackstone.  Beyond is Yellowstone Canyon.

North of Yellowstone Park, the river passes through the magnificent Paradise Valley, offering more than 100 miles 

North of Yellowstone Park, the river passes through the magnificent Paradise Valley, offering more than 100 miles