Why is the Grand Canyon so deep?

A distinct and ordered combination of geologic events. Finally, beginning just 5-6 million years ago, the Colorado River began to carve its way downward. Further erosion by tributary streams led to the canyon's widening. Still today these forces of nature are at work slowly deepening and widening the Grand Canyon.



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The composition (sandstone) and presence of stromatolites indicate that this area was previously a very shallow sea. The rock layers in the Grand Canyon Supergroup have been tilted, whereas the other rocks above this set are horizontal.

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The mystery of the Great Unconformity What's tricky about the Grand Canyon is that the rocks in its walls seem to be missing a big part of the picture. In 1869, a man named John Wesley Powell observed that several layers of rock that should've been in the Canyon walls were not present.

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Phantom Ranch is a historic oasis nestled at the bottom of Grand Canyon. It is on the north side of the Colorado River tucked in beside Bright Angel Creek. Phantom Ranch is the only lodging below the canyon rim, and can only be reached by mule, on foot, or by rafting the Colorado River.

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Those who take trips to visit the Grand Canyon have three popular alternatives for reaching the bottom. The options are hiking, using a mule, or rafting through the Colorado River. Hiking and rafting are two popular activities in the Grand Canyon for gaining access to the bottom.

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Most visitors don't know that you can also drive to the bottom of the canyon! You do so by taking Diamond Creek Road. The route starts in Peach Springs, Arizona, a small town on the historic Route 66. In order to drive on this road to the Grand Canyon, you'll need a permit, as it's on Hualapai land.

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The Grand Canyon is a breathtaking sight to behold. Its many caves, canyons, waterways and wildlife have mystified people for ages. While it is breathtaking, there's much we actually don't know about the Grand Canyon. Secrets are hidden in the rocks, which haven't been figured out or even discovered yet.

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Considered one of the seven natural wonders of the world, the canyon stretches an impressive 227 miles long and averages over ten miles wide. Located in northwestern Arizona, the Grand Canyon is a natural wonder every American should see.

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The Tribes of Today Together with the National Park Service, they help to care for Grand Canyon. The Havasupai live in the last remaining tribal village inside the canyon. Navajo, Southern Paiute, and Hualapai communities lie along the edge, or rim, of the canyon. Hopi, Zuni, and Apache also live nearby.

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You cannot walk to Africa from the Grand Canyon though unless you go up through Alaska then into Russia and all the way through Central Asia and into Africa.

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Encompassing an estimated 1,218.37 acres (1,904 square miles), the Canyon is capable of holding 1 – 2 quadrillion gallons of water. Really. If you poured all the river water on Earth into the Grand Canyon, it would still only be about half full.

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A large sandstone boulder contains several exceptionally well-preserved trackways of primitive tetrapods (four-footed animals) which inhabited an ancient desert environment. The 280-million-year-old fossil tracks date to almost the beginning of the Permian Period, prior to the appearance of the earliest dinosaurs.

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Impress Your Friends With These Fun Facts!*
  • We don't really know how old it is. ...
  • Grand Canyon creates its own weather! ...
  • There are no dinosaur bones in the canyon. ...
  • But there are lots of other fossils in the area. ...
  • There's a town down in the canyon. ...
  • We're missing 950 million years worth of rocks!


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Falling Deaths at the Grand Canyon: 198 60 people have fallen off the ledge. 63 people have fallen from inside the canyon. 75 people in this category purposefully jumped or fell to commit suicide.

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Though they can scarcely be seen from the viewing areas along the rim, mines thrived within the canyon in the early 1900s, as camps extracted copper and gold from more than 40 sites.

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Grand Canyon: What Not to Do
  • Grand Canyon: What Not to Do. ...
  • Timing is Everything: Don't Arrive at Peak Times. ...
  • Liquid Assets: Don't Neglect to Stay Hydrated. ...
  • Get an Altitude Adjustment: Don't Underestimate the Elevation. ...
  • Weather or Not: Don't Forget to Pack for Changing Conditions.


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Both the South Rim and the North Rim offer rim trail hikes that have spectacular views of the inner canyon, some on paved trails. Or you can choose to day hike into the canyon. Permits are not required for non-commercial day hikes.

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