Across
- 3. - Wake-up signal
- 4. - Mind-boggling challenge
- 5. - Tall natural elevation
- 6. - Mode of transportation in the sky
- 8. - Harmonious sound
- 11. - Cultivated outdoor space
- 13. - Refreshing summer drink
- 14. - Device for taking pictures
- 16. - Cozy home feature
- 19. - Visitor's announcement
Down
- 1. - Dense collection of trees
- 2. - Inflatable party decoration
- 4. - Artistic creation on canvas
- 7. - Slow-moving reptile
- 9. - Wax-based illumination
- 10. - Vast body of water
- 12. - Writing instrument
- 15. - Structure spanning a gap
- 17. - Strategic board game
- 18. - Fluffy atmospheric formation