10. Grand Canyon, AZ

The Grand Canyon is six million years old, which means it was carved by the Colorado River in "only" six million years. This is a short time period compared to the age of the rocks in the canyonRead more
The Grand Canyon is six million years old, which means it was carved by the Colorado River in "only" six million years. This is a short time period compared to the age of the rocks in the canyonRead more
Traveler
Richtig cool!