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๐ฟ Natural Wonders
Grand Canyon
Vast gorge carved by Colorado River; 2 billion years of Earth history
๐บ๐ธ USA Arizona 1919
๐ฟ Why It Matters
1
277 miles long, up to 18 miles wide and 1 mile (1.6 km) deep
2
Rock layers expose 2 billion years of Earth's geological history in one view
3
Grand Canyon National Park (1919); 6 million visitors/year; 1,000 plant species
Rocks at the bottom are 1.8 billion years old โ nearly half Earth's age
Quick Facts
Category
๐ฟ Natural Wonders
Country
๐บ๐ธ USA
Location
Arizona
Key Year
1919
About
Vast gorge carved by Colorado River; 2 billion years of Earth history