Across
- 2. Water falling one drop at a time
- 5. Having no light inside
- 8. Study of rocks and earth
- 10. Liquid that shapes caves over time
- 11. Rock formation growing from floor
- 13. Narrow walkway through cave
- 14. Hard hat worn for safety
- 16. Rock shape created over time
- 17. Clear mineral formation in caves
- 18. Natural substance found in rocks
- 19. Sound that bounces back in caves
- 20. Going far into the earth
Down
- 1. Below the surface of earth
- 3. Hard natural material
- 4. Tool that makes light in darkness
- 6. Flying animal that lives in caves
- 7. Hanging rock formation from ceiling
- 9. Type of rock that forms caves
- 12. Natural hollow space in rock
- 15. Search and discover new places