Stretching from the Lower Falls to the Tower Falls area, the Grand Canyon of the Yellowstone is about 28 kilometers (17 miles) long, 250–350 meters (820–1,150 feet) deep, and 450–1,200 ...

The Grand Canyon of the Yellowstone is also notable for its remarkable water resources. The Yellowstone River itself is one of the few remnants of a long-lost North American landscape that existed ...

Yellowstone is famous for its volcanic landscapes, ... (in Yellowstone, Grand Canyon, ... those in the Grand Canyon of the Yellowstone exist because rock layers change laterally from soft to hard.

Lurking beneath Old Faithful, scientists have long known there was a supervolcano in Yellowstone National Park with the potential to make the Mt. St. Helens' eruption look like child's play. Now ...

The recent death of a bison at Grand Prismatic Spring is an emphatic example of the danger posed by thermal areas in ...

Grand Canyon of the Yellowstone is ranked #1 out of 17 things to do in Yellowstone National Park. See pictures and our review of Grand Canyon of the Yellowstone.

That chamber contains 11,200 cubic miles of magma, which, in addition to the already-known 2,500 cubic miles in an upper chamber, means the combined amount could fill the Grand Canyon nearly 14 times.

Enough hot rock sits beneath Yellowstone National Park to fill the Grand Canyon nearly 14 times over, according to our best view yet of the supervolcano that lies below the famous landscape.

From Yosemite to Yellowstone and the Grand Canyon, all national parks are free. April 16, 2010— -- Our national parks have a way of mesmerizing visitors and reminding us of why we travel. And ...

It alone has a volume 2.5 times that of the Grand Canyon. But those great magma expanses do not mean that the two hellish hollows could overflow the Grand Canyon with molten rock. No new dangers ...

Sept. 28, 2009— -- Our national parks have a way of mesmerizing visitors and reminding us of why we travel. From sunset at the Grand Canyon to watching lava pour out of Kilauea to witnessing ...