Across
- 4. Marshy outlet of a lake or river.
- 6. Ring-shaped coral reef.
- 9. Narrow land connecting two larger areas.
- 10. Large, slow-moving mass of ice.
- 12. Point of land extending into a body of water.
- 13. Steep or rugged cliff or rock face.
- 16. Mountain that can erupt with lava.
- 17. Fertile spot in a desert.
- 18. Cold, treeless region.
- 20. Flat-topped hill with steep sides.
Down
- 1. Area of high, flat land.
- 2. Where a river divides before entering a larger body of water.
- 3. Small sheltered bay.
- 5. Group of islands.
- 7. Isolated hill with steep sides.
- 8. Long, narrow inlet with steep sides.
- 11. Deep crack in an ice sheet or glacier.
- 14. Deep gorge between cliffs.
- 15. Vegetation consisting chiefly of tangled shrubs and thorny bushes.
- 19. Sand hill formed by the wind.