Monument Geyser Basin is one of the most unique areas of Yellowstone National Park. Its ancient undersea wasteland at 7,300 ...

For every Old Faithful and Grand Canyon of the Yellowstone, there's a host of other obscure places like The Gumper, Lactose ...

For anglers, fishing is allowed on Yellowstone Lake. There are also several scenic trails in the area. Before departing, visitors should stop by Mud Volcano to see its sputtering mud pots.

Editor’s Note: This story accompanies the May 2016 issue of National Geographic magazine, devoted entirely to America’s first national park. Find more at natgeo ...

It’s no secret that Yellowstone National Park can be jampacked ... by the hiss and gurgle of flaring fumaroles and bubbling mud pots, and the quiet crunch of snow underfoot.