Despite being one of the most famous and most-visited attractions in the United States, Grand Canyon National Park still holds some surprises. Here are a few facts about the Grand Canyon you probably don’t know.
1. We’re missing 950 million years’ worth of rocks
The Grand Canyon offers one of the most visible examples of a worldwide geological phenomenon known as the Great Unconformity, in which 250 million-year-old rock strata lie back-to-back with 1.2 billion-year-old rocks. What happened during the hundreds of millions of years between remains largely a mystery.

You might think you know all the facts about the Grand Canyon, but this Arizona landmark is still full of surprises. Pay a visit to Grand Canyon National Park to learn about the canyon’s unique history, and get a firsthand look at its indescribable natural beauty.


