Across
- 2. Volcanic depressions
- 5. Water from the sky
- 6. North American grassland
- 13. Erupting hot springs
- 14. Dry stream bed
- 17. Small steep-sided valleys
- 18. Flat land by a river
- 19. Particles carried by water
- 22. Coasts meeting water
- 23. Barren and uninhabited land
- 25. Sheltered inlets of sea
- 28. Mound of windblown sand
- 29. Barren eroded terrain
- 30. Tropical grassy ecosystem
Down
- 1. Almost an island
- 3. Step-like flat land
- 4. Trees in coastal wetlands
- 7. Vast treeless plains
- 8. Relating to northern forests
- 9. Bottom of the ocean
- 10. Flat expansive lands
- 11. Soft and wet ground
- 12. Navigator of seas
- 15. Long raised landforms
- 16. Severe winter storms
- 20. Zone near the equator
- 21. Edge of land by water
- 24. Treeless Arctic regions
- 26. Wearing away of land
- 27. Large powerful waterfall