One of the most spectacular geologic features …

One of the most spectacular geologic features on Earth, Grand Canyon National Park in Arizona never fails to impress. Carved over the course of millions of years, the canyon averages 10 miles in width and 1 mile in depth. Resplendent with colorful layers and rugged textures, you’ll never forget your first sight of this incredible place. Photo by W. Tyson Joye, National Park Service.