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11 Things You Might Not Know About the Grand Canyon on Its 100th Birthday

Whether you’ve made the trek yourself or seen it on a postcard, the Grand Canyon is one of the most instantly recognizable sights in the United States.

© iStock.com/SumikoPhoto 11 Things You Might Not Know About the Grand Canyon

By M. Arbeiter, Mental Floss

Whether you’ve made the trek yourself or seen it on a postcard, the Grand Canyon is one of the most instantly recognizable sights in the United States. But how well do you really know the Colorado River’s most famous handiwork? Here are 11 facts about the Grand Canyon, which Congress declared a U.S. National Park on February 26, 1919.


1. The Grand Canyon is not the world's deepest canyon.

Let’s clear up this misconception right off the bat. The Arizona landmark may well be the world’s grandest canyon, but it’s not the deepest. Agreeing on how to measure the depth of gorges is a surprisingly difficult task, but depending on who you ask, that distinction goes to Peru’s Cotahuasi Canyon, which is over 11,000 feet deep, or Nepal’s Kali Gandaki Gorge. The Grand Canyon, on the other hand, is just one mile deep.


2. It isn't the deepest canyon in the U.S., either

© Provided by Sportority, Inc. (Mental Floss) A view of the Colorado River at the bottom of the Grand Canyon

The Grand Canyon can’t claim the domestic championship: Hells Canyon has been carved by the Snake River along the border of Oregon and Idaho and drops a half a mile deeper than the Grand Canyon.


3. The Grand Canyon's age is tough to pin down.

© Provided by Sportority, Inc. (Mental Floss) The Grand Canyon

Like measuring depth, figuring out a canyon’s age is not as easy as you might think. Until recently, estimates pegged the Grand Canyon’s age at 6 million years. It turns out that the answer may not be that straightforward, though. In the last decade, controversy has erupted in scientific circles over just how many candles should be on the geologic marvel’s birthday cake. Attempts to analyze the minerals within the canyon led to the conclusion that the canyon may be more like 70 million years old.

What makes answering what seems like a simple question so difficult? The Grand Canyon may not have been carved in one fell swoop by the Colorado River. Instead, one hypothesis posits that the canyon may have formed in pieces over time, with parts of it dating back as many as 70 million years, but with the connected canyon we know and love today only emerging in the last 6 million years.


4. The Hopi consider the Grand Canyon to be a gateway to the afterlife.

© Provided by Sportority, Inc. (Mental Floss) A view from the rim of the Grand Canyon

Referred to as Öngtupqa in the Hopi language, the Grand Canyon carries great spiritual significance for the Native American tribe that has long inhabited the region. Upon death, a Hopi is believed to pass westward through the sipapuni, or “place of emergence”—a dome of mineral deposits that sits upstream from the union of the Colorado River and the Little Colorado River inside the canyon—on his or her journey into the afterlife.


5. Temperatures vary greatly between the top and bottom of the Grand Canyon.

© Provided by Sportority, Inc. (Mental Floss) The sun sets over the Grand Canyon at Bright Angel Point.

A trek from the peak of the Grand Canyon’s North Rim, which stands about 8000 feet above sea level, to its bottom a mile down may see a traveler experience temperature swings of more than 25ºF. Summer highs in the depths of the gorge can exceed 100ºF, and winter lows at the crest can dip to 0ºF.


6. The first Europeans saw the Grand Canyon in 1540.

© Provided by Sportority, Inc. (Mental Floss) Ribbon Falls in the Grand Canyon

After thousands of years of inhabitation by Native American groups, the Grand Canyon welcomed its first European visitor in the 16th century. Aided by Hopi locals, Spanish conquistador García López de Cárdenas led an exploration of the grounds in 1540, even sending three soldiers down to explore the canyon’s depths. The trek didn’t last very long: The soldiers were overcome by thirst, possibly because the Hopi intentionally safeguarded their valued Colorado River from the travelers’ reach.


7. Subsequent European visitors took their time returning to the Grand Canyon.

© Provided by Sportority, Inc. (Mental Floss) The Colorado River snakes through the Grand Canyon.

After this initial contact didn’t reveal any great riches in the area, there was little urgency to return on the part of the Spanish. Europeans didn’t make their second visit until 1776, when Spanish priests Francisco Atanasio Domínguez and Silvestre Vélez de Escalante happened upon the canyon while attempting to find a route from Santa Fe to their Catholic mission in Monterey, California. In the very same year, another Spanish missionary, Francisco Garcés, took in the canyon during a largely unsuccessful attempt to convert the local Havasupai to Christianity.


8. Explorers of European descent didn’t navigate to the bottom of the Grand Canyon until 1869.

© Provided by Sportority, Inc. (Mental Floss) A vintage map of Grand Canyon National Park

In 1869, seven years after losing his right arm during the Battle of Shiloh in the American Civil War, John Wesley Powell led nine men—including a printer for the Rocky Mountain News, an 18-year-old mule driver and bullwhacker, and Powell’s own brother—on a thousand-mile mission down the Colorado River and its tributaries and through the Grand Canyon. Only six members of the team would complete the expedition, but Powell returned in 1871 with congressional backing and an 11-man team that included scientists. That trip produced the first maps of the Colorado River.


9. Teddy Roosevelt used a loophole to protect the Grand Canyon.

© Provided by Sportority, Inc. (Mental Floss) Tourists stand at Mather Point

Roosevelt needed just one visit to the Grand Canyon in 1903 before he decided that the marvel should be protected. Unfortunately, it was beyond his authority to designate an area as a national park without congressional approval. To sidestep what he predicted would be an uncooperative Congress, Roosevelt took the long way around. In 1893, President Benjamin Harrison had established a forest preserve in the area, and so Roosevelt was able to add considerably more protection in 1906 by using a presidential proclamation to designate the area as the Grand Canyon Game Preserve. Two years later, he declared the area a national monument. The area was safe, but even then, Roosevelt couldn’t get the green light to create the Grand Canyon National Park—formal approval didn’t come until 1919.


10. The Grand Canyon was home to an early "instant photo" business.

© Provided by Sportority, Inc. (Mental Floss) The Grand Canyon at sunset

Brothers Emery and Ellsworth Kolb devoted their lives to photographing natural beauty, and in setting up a studio on the South Rim of the Grand Canyon in 1906, they found a savvy business opportunity as well. From their studio at the head of the Bright Angel Trail, the brothers would snap photographs of tourists as they departed for the canyon’s bottom on mules. When the tourists made their way back up to the rim that evening, the brothers would be ready to sell them developed prints documenting their journey.


11. The Grand Canyon was the site of a grand hoax in 1909.

© Provided by Sportority, Inc. (Mental Floss) The Grand Canyon at sunset

On April 5, 1909, the Arizona Gazette detailed the findings of two archaeologists who claimed to have discovered traces of either an ancient Tibetan or Ancient Egyptian civilization in an underground tunnel network within the Grand Canyon. The story of ancient artifacts like copper and gold urns and mummified bodies discovered by two affiliates of the Smithsonian caused quite a stir, but it unraveled quickly. The Smithsonian denied any knowledge of the pair of scientists, and subsequent searches failed to uncover the “nearly inaccessible” cavern the (possibly fictitious) duo claimed to have found. Despite this lack of evidence, the belief that the Smithsonian actually found and covered up this cave of wonder remains persistent among conspiracy theorists.




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Kids Magazine: 11 Things You Might Not Know About the Grand Canyon on Its 100th Birthday
11 Things You Might Not Know About the Grand Canyon on Its 100th Birthday
Whether you’ve made the trek yourself or seen it on a postcard, the Grand Canyon is one of the most instantly recognizable sights in the United States.
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