Across
- 5. — Volcanic glass
- 6. — A type of cloud
- 8. — String instruments
- 10. — A portable light source
- 12. — A short story with a moral
- 14. — An icy space object with a tail
- 17. — What plants release in spring
- 18. — A carved symbol or character
- 20. — A sheltered place for ships
- 23. — Fossilised tree resin
- 25. — A book of maps
- 27. — Legendary or ancient
- 28. — A character from ancient alphabets
- 29. — A collection of stored documents
- 30. — A line touching a curve
Down
- 1. — A cold, treeless biome
- 2. — A coded message
- 3. — A secret code
- 4. — A writing tool from a feather
- 7. — The path a planet takes
- 9. — A shallow body of water
- 11. — A cloud of gas in space
- 13. — A reflected sound
- 15. — Something mysterious
- 16. — A curve that winds around
- 19. — Ice crystals on cold surfaces
- 21. — An ancient object
- 22. — Water in the desert
- 24. — A puzzling question
- 26. — A common crystal mineral
- 27. — A metamorphic rock