Across
- 4. Famous for its natural sandstone arches.
- 7. Home to a large population of brown bears.
- 9. Home to an immense underground cave system.
- 11. The largest tropical wilderness of any kind in the U.S.
- 14. Known for its stunning glacial landscapes.
- 16. Encompasses diverse ecosystems and mountains.
- 18. Dominated by an iconic volcanic peak.
- 21. Features the Grand Prismatic Spring, a rainbow-colored hot spring.
- 22. Features the iconic Gateway Arch in St. Louis.
- 23. Named after a prominent bend in the Rio Grande.
- 25. Contains some of the tallest trees on Earth.
- 27. Protects a diverse marine ecosystem.
- 28. A volcano summit known for its sunrise.
- 29. Home to one of the youngest mountain ranges.
Down
- 1. Named after its unique bristled and bushy trees; located in a desert.
- 2. Home to ancient Pueblo cliff dwellings.
- 3. Home to the hottest temperature ever recorded.
- 5. Contains The Narrows
- 6. The deepest lake in the United States.
- 8. Known for El Capitan and Half Dome rock formations.
- 10. The Appalachian Trail runs through this park.
- 12. Home to General Sherman
- 13. A group of islands off the California coast.
- 15. Part of the Pacific Northwest's "Alps."
- 17. Home to unique rock formations and caves.
- 19. The first national park east of the Mississippi.
- 20. Home to striking eroded buttes and pinnacles.
- 22. The world-famous chasm of the Colorado River.
- 24. Known for its unique hoodoos and amphitheaters.
- 26. The highest peak in North America.