Grand Canyon of Yellowstone

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Online tour of the Grand Canyon of the Yellowstone

About 600,000 years ago, huge volcanic eruptions occurred in Yellowstone, emptying a large underground magma chamber. Volcanic debris spread for thousands of square miles in a matter of minutes. The roof of this chamber collapsed, forming a giant smoldering pit. This caldera was 30 miles (45 km) across, 45 miles (75 km) long, and several thousand feet deep. Eventually the caldera was filled with lava.

The present appearance of the canyon dates from about 10,000 years ago when the last glaciers melted. Since that time, erosional forces (water, wind, earthquakes, and other natural forces) have continued to sculpt the canyon.

Information about visiting Yellowstone National Park

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Related links

• Grand Canyons of Earth

  This guide offers comprehensive information about the earths grandest canyons grouped into their countries for easy searching. Some of the information is colourful and descriptive while some comes from a scientific angle and theres lots of information! There is even a section covering impressive canyons on other planets.

• Slot Canyons

  Some of the most striking canyons are the narrow sculpted slot canyons of the American south west. This site has information about how this kind of canyon is formed and lots of spectacular photos of the narrow passages lit up by shafts of sunlight in shades of red that typify the best examples. It also has directions and descriptions of possible slot canyon hikes.

• The Grand Canyon

  Information about the worlds most famous canyon (though not actually the largest), the Grand Canyon. Easily accessible by road and adored by photographers, the Grand Canyon is a perfect setting for walking or kayaking or rafting and receives millions of visitors each year. If you’re interested in seeing some impressive geography this is an excellent place to start.

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