Across
- 1. Largest mammal in North America
- 4. California tree so big it has its own military rank
- 6. Forrest in Arizona that's "scared"
- 8. Unit of currency
- 11. 2200 mile hiking trail in eastern US
- 12. A very active mountain
- 13. Northernmost town in Alaska
- 15. National park location of Going-to-the-sun road
- 17. Home to Old Faithful
- 18. Great lake entirely in the US
- 19. "Mountain" range in South Dakota
- 20. National bird
Down
- 2. Largest freshwater lake
- 3. Oldest bridge -older than the US itself
- 5. Worlds largest office building
- 7. The First state park in the US
- 9. National park known for its waterfalls
- 10. Longest river in the US
- 14. Southernmost US city
- 16. Wetland in Florida