The Grand Canyon is a massive geological formation located in northern Arizona. It stretches approximately 277 miles long, up to 18 miles wide, and reaches depths of over a mile. This natural wonder was carved by the Colorado River over millions of years, showcasing layers of colorful rock that reveal the Earth's history. Designated as a national park in 1919, the Grand Canyon attracts millions of visitors each year. It offers various activities such as hiking, rafting, and scenic viewpoints. The park is also home to diverse wildlife and plant species, making it an important ecological area in the United States.