Grand Prismatic Spring ascended from a beautiful backwater spot to the second most popular destination in Yellowstone ...

Idiotic tourists (also known as “Tourons”) at Yellowstone National Park are at it again. This time around, it’s not someone ...

It's not the geothermal geysers, bears, or bison, but this one safety concern in Yellowstone National Park claims more lives ...

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 ...

The Midway Geyser Basin's Grand Prismatic Spring is the largest hot spring in Yellowstone and one of the largest hot springs in the world. Measuring approximately 370 feet in size and around 121 ...

"Yellowstone and all our National Parks are to be cared for and preserved for all to enjoy." Wandering off-trail at Grand Prismatic also risks damaging the delicate bacterial mats that give the ...