Geography & Nature Quiz · 10 Questions
Bing Grand Canyon Quiz: Descend Through 1.8 Billion Years of Rock
Start at the rim, answer one question per rock layer, and see whether you make it all the way down to the Colorado River. Every answer comes with a short, fact-checked explanation.
Mile 01 What Is the Bing Grand Canyon Quiz?
Few places show up on the Bing homepage as often as America's great natural landmarks, and the Grand Canyon is one of the most photographed of them all. When a sweeping canyon image appears behind the search bar, many people go looking for a "Bing Grand Canyon quiz" to test what they actually know about the place they're admiring.
This page is built for exactly that moment. Instead of a random list of trivia, the quiz below follows the canyon's own structure: each question is tied to one of the ten classic rock layers you would pass on a hike from the rim to the river. By the time you finish, you'll have reviewed the canyon's geology, its history as a protected landscape, the people who have lived there for thousands of years and the wildlife that still depends on it.
If you enjoy a fresh challenge every day, you can also play Today's Bing Quiz, which changes topic daily and runs 10 questions against a five-minute timer.
Mile 02 The Grand Canyon at a Glance
Keep these numbers in mind before you start. Several of them appear in the quiz, and they come up often in geography trivia.
| Location | Northern Arizona, United States |
|---|---|
| Carved by | The Colorado River, aided by uplift of the Colorado Plateau |
| Length | About 277 river miles (446 km) |
| Greatest width | Up to about 18 miles (29 km), rim to rim |
| Depth | More than a mile — roughly 6,000 feet (1,800 m) at its deepest |
| Park area | About 1.2 million acres (roughly 1,900 square miles) |
| National monument | January 11, 1908, by President Theodore Roosevelt |
| National park | February 26, 1919, signed by President Woodrow Wilson |
| UNESCO World Heritage Site | Inscribed in 1979 |
| Visitors in 2025 | About 4.42 million, the fourth-busiest U.S. national park |
| Oldest exposed rocks | Roughly 1.7–1.8 billion years old (Vishnu Basement Rocks) |
| Rim elevations | South Rim ≈ 7,000 ft; North Rim ≈ 8,000 ft |
Quick perspective: the North and South Rims are only about 10 miles apart as the raven flies, yet the drive between them is around 215 miles and takes roughly four and a half hours.
Mile 03 Take the Strata Descent Quiz
Depth: 0 ft below rim
Score: 0/10
Pick one answer per layer. Your choice locks in, the explanation appears and you descend about 600 feet. Reach the river to see your rank.
Kaibab Limestone · rim
Layer 1 of 10
Which river carved the Grand Canyon?
Answer: Colorado RiverThe Colorado rises in the Rocky Mountains and runs about 1,450 miles toward the Gulf of California. As the Colorado Plateau slowly rose, the river kept cutting down through it, exposing the layered walls we see today. The Green River is a major tributary that joins it upstream in Utah.
Toroweap Formation
Layer 2 of 10
Measured along the river, roughly how long is the Grand Canyon?
Answer: 277 milesThe National Park Service measures the canyon at 277 river miles, from Lees Ferry to the Grand Wash Cliffs. It reaches up to about 18 miles wide and more than a mile deep. (1,450 miles is the approximate length of the entire Colorado River.)
Coconino Sandstone
Layer 3 of 10
The pale cliff band called the Coconino Sandstone formed from what?
Answer: Wind-blown desert sand dunesAbout 275 million years ago, a vast dune field covered the region. Look closely at the Coconino and you'll see sweeping diagonal lines called cross-bedding — the frozen faces of those dunes. Fossil trackways left by small ancient animals are preserved in this layer too.
Hermit Formation
Layer 4 of 10
Which U.S. president first protected the Grand Canyon as a national monument in 1908?
Answer: Theodore RooseveltOn January 11, 1908, Roosevelt used the Antiquities Act of 1906 to proclaim Grand Canyon National Monument. He had visited the canyon in 1903 and urged Americans to keep it as nature made it. Woodrow Wilson later signed the law that made it a national park.
Supai Group
Layer 5 of 10
In what year did the Grand Canyon officially become a national park?
Answer: 1919President Woodrow Wilson signed the act establishing Grand Canyon National Park on February 26, 1919. The year 1872 belongs to Yellowstone, the first U.S. national park, and 1908 was the national monument proclamation.
Redwall Limestone
Layer 6 of 10
Despite its name, what is the natural color of Redwall Limestone underneath its surface stain?
Answer: Gray to bluish-grayThe Redwall formed in a warm, shallow sea roughly 340 million years ago and is naturally gray. Rainwater washes iron-rich red sediment down from the Supai Group and Hermit Formation above, painting the cliff face red. Break off a fresh piece and the true gray shows through.
Muav Limestone
Layer 7 of 10
Who led the 1869 expedition that made the first documented boat journey through the Grand Canyon?
Answer: John Wesley PowellPowell, a geologist and Civil War veteran who had lost his right arm in battle, set out from Green River in Wyoming Territory in May 1869 with nine other men. The crew navigated uncharted rapids for about three months, and Powell's writings helped make the canyon famous.
Bright Angel Shale
Layer 8 of 10
Which endangered bird, reintroduced to northern Arizona in 1996, is often spotted soaring over the canyon?
Answer: California condorAfter the species nearly vanished in the 1980s, captive-bred condors were released at the Vermilion Cliffs, north of the park, in 1996. With wingspans that can reach about 9.5 feet, they are the largest flying land birds in North America. Each one carries a numbered wing tag so biologists can track it.
Tapeats Sandstone
Layer 9 of 10
What does the "Great Unconformity" exposed in the canyon represent?
Answer: A huge gap in the rock recordIn places, the roughly 525-million-year-old Tapeats Sandstone sits directly on Vishnu rocks that are well over a billion years older. The layers that once lay between them either eroded away or were never deposited, leaving a missing chapter of Earth's history you can actually touch.
Vishnu Schist · river
Layer 10 of 10
About how old are the oldest rocks exposed at the bottom of the Grand Canyon?
Answer: About 1.7–1.8 billion yearsThe dark, glittering Vishnu Schist and related basement rocks of the Inner Gorge formed deep in the Earth's crust under intense heat and pressure. They are among the oldest rocks you can see in the American Southwest. (4.5 billion years is the approximate age of Earth itself.)
You reached the Colorado River
0/10
Rim Explorer
Mile 04 How the Grand Canyon Formed
The Grand Canyon is really two stories layered on top of each other. The first is about how the rocks were made. The second is about how they were cut open.
Building the layers
For hundreds of millions of years, the land that is now northern Arizona sat near sea level. Oceans advanced and retreated across it, leaving limestone and shale. Between those seas came beaches, river floodplains and, at one point, a Sahara-like desert. Each environment left a distinctive deposit, and those deposits stacked up like pages in a book. Below them lie far older crystalline rocks, plus a set of tilted layers known as the Grand Canyon Supergroup that you can see in some side canyons.
Lifting and cutting
Over the past several tens of millions of years, the whole region — the Colorado Plateau — was pushed upward thousands of feet with surprisingly little folding. As the land rose, the Colorado River held its course and sliced downward. Most geologists estimate that the canyon as we know it took shape within the last five to six million years, though research suggests some segments may have older roots, and the exact timeline is still debated.
The river isn't the only sculptor. Rain, flash floods, freeze-and-thaw cycles and rockfalls widen the canyon far more than the river deepens it. Soft layers such as shale erode into gentle slopes, while hard limestone and sandstone stand as cliffs. That alternating pattern is what gives the canyon walls their stair-step profile.
Mile 05 Reading the Rock Layers
Here are the ten classic layers used in the quiz, from the rim to the river. Ages are approximate and rounded, based on National Park Service interpretation.
Kaibab Limestone~270 million yrsShallow sea; caps both rims
Toroweap Formation~273 million yrsShallow sea and coastal flats
Coconino Sandstone~275 million yrsDesert sand dunes
Hermit Formation~280 million yrsRiver floodplains; red mudstone
Supai Group~285–315 million yrsCoastal lowlands and shorelines
Redwall Limestone~340 million yrsWarm tropical sea; gray rock stained red
Muav Limestone~505 million yrsDeeper offshore sea
Bright Angel Shale~510 million yrsNear-shore mud; greenish slopes
Tapeats Sandstone~525 million yrsAncient beaches
Vishnu Schist~1.7–1.8 billion yrsMetamorphic basement of the Inner Gorge
Memory trick: try the sentence "Know The Canyon's History, Study Rocks Made By Time, Very Slowly" to remember Kaibab, Toroweap, Coconino, Hermit, Supai, Redwall, Muav, Bright Angel, Tapeats and Vishnu.
Mile 06 People of the Canyon
Long before it was a national park, the Grand Canyon was home. Archaeologists have found evidence of human presence stretching back roughly 12,000 years, from early hunters to Ancestral Puebloan farmers who built granaries in the canyon's walls. Today, the National Park Service recognizes 11 Native American tribes with traditional ties to the canyon, including the Havasupai, Hualapai, Hopi, Navajo (Diné), Zuni, Yavapai-Apache and several Southern Paiute bands.
The Havasupai still live deep within a side canyon in the village of Supai, famous for its blue-green waterfalls. Supai is so remote that mail is delivered by mule train. On the canyon's western end, the Hualapai Tribe operates Grand Canyon West, home to the glass-floored Skywalk, which opened in 2007 and sits on tribal land outside the national park.
1540
Hopi guides lead Spanish soldiers under García López de Cárdenas to the South Rim, the first recorded European visit.
1869
John Wesley Powell's expedition completes the first documented boat journey through the canyon.
1901
The first train arrives at the South Rim from Williams, Arizona, opening the canyon to mass tourism.
1932
Architect Mary Colter completes the Desert View Watchtower, inspired by Ancestral Puebloan towers.
One lesser-known chapter changed air travel worldwide. In 1956, two passenger airliners collided over the canyon, killing all 128 people aboard. The tragedy exposed gaps in air traffic control and helped lead to the creation of the Federal Aviation Agency (now Administration) in 1958.
Mile 07 Wildlife and Ecosystems
Because the canyon spans more than a mile of elevation, a hike from rim to river passes through habitats as different as a Canadian forest and a Mexican desert. The forested North Rim is cooler and snowier, while the inner canyon regularly tops 100°F (38°C) in summer. That range supports a remarkable variety of life.
- Kaibab squirrel: a tassel-eared squirrel with a bright white tail, found only on the Kaibab Plateau around the North Rim. Its close cousin, the Abert's squirrel, lives on the South Rim — a textbook example of how the canyon separates populations.
- Grand Canyon rattlesnake: a pinkish rattlesnake subspecies whose coloring blends in with the canyon's red and tan rocks.
- California condor: the giant scavenger from the quiz, now a hopeful conservation story.
- Desert bighorn sheep, mule deer and elk roam various parts of the park, and elk are a common sight near South Rim roads.
The river itself has changed since Glen Canyon Dam was completed upstream in the 1960s. Water released from the reservoir is colder and clearer than the river once ran, which affects native fish such as the endangered humpback chub. Scientists have run planned high-flow releases to help rebuild sandbars and beaches downstream. And when the sun goes down, the park reveals another resource: it was certified as an International Dark Sky Park in 2019, protecting some of the darkest night skies in the region.
Mile 08 The Grand Canyon in 2026
Trivia writers love current events, so here is what changed recently. In summer 2025, the lightning-caused Dragon Bravo Fire swept across part of the North Rim. Park officials confirmed that it destroyed the nearly century-old Grand Canyon Lodge, the North Rim Visitor Center and many historic cabins, and the area stayed closed through the following winter.
The disruption showed up in the numbers. Grand Canyon welcomed about 4.42 million visitors in 2025, down from more than 4.9 million in 2024, and slipped from third to fourth among the most-visited U.S. national parks.
The North Rim reopened for its summer season on May 15, 2026, but in a scaled-back form. Paved scenic roads and the North Kaibab Trail returned (the trail to foot traffic only), while overnight lodging inside the park on the North Rim was not offered for the 2026 season. Decisions about rebuilding the lodge are going through a separate public environmental review. The North Rim is seasonal, so anyone planning a trip should always check the official National Park Service status page first. The South Rim, home to the main visitor services, remains open year-round.
Mile 09 Tips for Acing Bing Quizzes
Whether the topic is a canyon, a coral reef or a castle, the same habits help you score higher on image-based trivia:
- Read the image caption first. The photo's location and photographer credit often hint at what the questions will cover.
- Think in categories. Most landmark quizzes mix geography, history, nature and one surprising "fun fact." Expect at least one of each.
- Watch the numbers. Distractors are frequently real numbers from nearby facts — like the Colorado River's total length versus the canyon's length.
- Learn from the explanations. Reading why an answer is right is how a one-day score turns into lasting knowledge.
- Practice daily. Short, regular sessions build general knowledge faster than occasional marathons.
Ready for more? Pick your next challenge:
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Mile 10 Answer Key
Show all 10 answers
- Colorado River
- 277 miles
- Wind-blown desert sand dunes
- Theodore Roosevelt
- 1919
- Gray to bluish-gray
- John Wesley Powell
- California condor
- A gap in the rock record of up to about a billion years or more
- About 1.7–1.8 billion years
Mile 11 Frequently Asked Questions
What is the Bing Grand Canyon quiz?
It's a general-knowledge quiz about the Grand Canyon, often searched for when a Grand Canyon photo appears on the Bing homepage. This version covers geology, history, Native heritage, wildlife and recent park news, with explanations for every answer.
Is this quiz affiliated with Microsoft Bing?
No. This is an independent educational quiz created by Bing Quizzes. It is not produced, endorsed or sponsored by Microsoft, and playing it does not earn Microsoft Rewards points.
How old is the Grand Canyon?
The rocks and the canyon have different ages. The oldest rocks at the bottom are roughly 1.7–1.8 billion years old, while most geologists estimate the canyon itself was carved within the last five to six million years. Some research suggests parts may be older, and scientists continue to debate the details.
How deep is the Grand Canyon?
The canyon is more than a mile deep — about 6,000 feet (1,800 meters) at its deepest point — and runs about 277 river miles long.
Can you visit the North Rim in 2026?
Yes, the North Rim reopened for the summer season on May 15, 2026, after the 2025 Dragon Bravo Fire, with a focus on day use. In-park overnight lodging on the North Rim was not available for the 2026 season. Because the North Rim is seasonal and conditions can change, check the National Park Service website before you go.
Mile 12 Sources
Facts in this article were checked against official and reputable sources, including:
- National Park Service — Grand Canyon National Park
- National Park Service — North Rim Status and Dragon Bravo Fire Recovery
- National Park Service Visitor Use Statistics
- KNAU Arizona Public Radio — Grand Canyon visitation in 2025
- UNESCO World Heritage Centre — Grand Canyon National Park
Disclaimer: Bing Quizzes is an independent website and is not affiliated with, endorsed by or sponsored by Microsoft Corporation. "Bing" is a trademark of Microsoft. Park conditions change frequently; always confirm current access and safety information with the National Park Service before visiting.