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The postcard showcases the Grand Canyon National Park in Arizona, highlighting its massive ridges and deep chasms. The park is easily accessible by rail, plane, and modern highways, making it a popular tourist destination in the Western United States. The Grand Canyon is known for its stunning natural beauty, carved by the Colorado River over millions of years. It is one of the most iconic and visited national parks in the country, attracting millions of visitors each year to marvel at its breathtaking vistas and geological formations.