The Grand Canyon
The Grand Canyon was formed by the constant erosion of the Colorado River. The river flows west through the canyon, averaging about 300 feet width, 100 feet depth, and flows about four miles an hour. It continues to erode and form the canyon to its present day configuration.
Five facts about the Grand Canyon are:
The Grand Canyon was formed by the constant erosion of the Colorado River. The river flows west through the canyon, averaging about 300 feet width, 100 feet depth, and flows about four miles an hour. It continues to erode and form the canyon to its present day configuration.
Five facts about the Grand Canyon are:
- Scientists estimate that it took three to six million years for the Grand Canyon to form in Arizona.
- It is about 277 miles long, eighteen miles wide, and more than a mile deep.
- The canyon includes approximately seventy species of animals; 250 species of birds, twenty five types of reptiles and five species of amphibians.
- Many pueblo, cliff dweller, and archaeological artifacts have been found in and around the canyon. The oldest artifact found is nearly 12,000 years old.
- The Grand Canyon National Park was made a national monument in 1908 and a national park in 1919.