Across
- 3. This park preserves thousands of archaeological sites, including ancient cliff dwellings.
- 7. Its iconic, jagged peaks are located just south of Yellowstone.
- 11. This "crown of the continent" is part of the world's first International Peace Park, which it shares with Canada.
- 12. This park contains the tallest dunes in North America, with Star Dune reaching nearly 750 feet.
- 13. The record for the hottest air temperature on Earth was set here in 1913.
- 16. You can descend into this desert park's subterranean realm on an elevator.
- 19. Its natural amphitheaters contain the world's highest concentration of hoodoos.
- 20. In 1872, this park became the world's first, celebrated for its bison and thousands of hydrothermal features.
Down
- 1. At over 400 miles long, this park protects the world's longest known cave system.
- 2. A blue haze often hangs over this park, which straddles two southeastern states.
- 4. A scenic railroad winds through this park, which was formed along a river near Cleveland.
- 5. At 20,310 feet, its namesake peak is the highest in North America.
- 6. Formed by the collapsed Mount Mazama, this park contains the deepest lake in the U.S..
- 8. One of the most remote parks, it has no roads and lies entirely north of the Arctic Circle.
- 9. The largest of its 2,000+ sandstone formations is Landscape Arch.
- 10. Visitors to this park can experience both glacier-capped peaks and temperate rainforests.
- 14. This is the only place in the world where you can find both alligators and crocodiles.
- 15. For millions of years, the Colorado River carved this park, one of the Seven Natural Wonders of the World.
- 17. This park's Chihuahuan Desert landscape is shaped by a prominent U-turn in the Rio Grande.
- 18. This national park is also a city, where it was initially set aside in 1832 as a reservation for its therapeutic waters.
