Across
- 2. Military tool tested near White Sands
- 6. Native peoples
- 7. River inspiring Big Bend's name
- 9. Early settlers made was from this plant
- 10. Remains formed the cavern system
- 11. Mercury
- 13. The cavern's exhalation
- 15. Rare animal living in White Sands
- 16. Abundant white mineral used in drywall
- 20. African American soldiers who settled here
- 22. Flower planted by Lady Bird Johnson
- 25. Plant with white, pillowy blooms
- 27. Two imposing animal like rock towers
- 29. Hoofed desert mammal
- 30. Compound that dissolved limestone deposits
- 31. Volunteers extract tons of this substance
Down
- 1. Early mining activity product
- 3. Common horse-drawn transit before trains
- 4. Common insect species
- 5. Ghost town west of Big Bend
- 8. Highest point in all of Texas
- 12. Large limestone chamber
- 14. Fully contained mountain range in Big Bend
- 17. Formation hanging from the ceiling of a cave
- 18. This park entrance takes visitors to Mx
- 19. Large limestone canyon in Big Bend
- 21. Formed from water dripping on cave floor
- 23. Sand blown into these ever shifting masses
- 24. Sky free from light pollution
- 26. Big Bend is larger than this state
- 27. Small desert city known for strange lights
- 28. Treaty creating the US/MX river border