The park is home to more than 2,000 sandstone arches . The visitor center is open every day except Christmas , but be sure to check the website as hours change according to the season . Iron oxide creates the chemical reaction that turns the sandstone red . Hide Caption The best time to view wildlife in the park is October through December .
The park is home to more than 2,000 sandstone arches . Iron oxide creates the chemical reaction that turns the sandstone red . Hide Caption The best time to view wildlife in the park is October through December .