Across
- 6. an opening in the earth, usually raised, through which gasses and lava escapes.
- 7. a broad, flat area of land higher than the surrounding land.
- 8. a lowland region that is saturated by water.
- 9. a raised, flat, area of land with steep cliffs, smaller than a mesa.
- 11. natural elevation of the earth's surface with steep sides and greater height than a hill.
- 12. a large mass that moves slowly down a mountain or over land.
- 15. a wide flat-topped mountain with steep sides, larger than a butte.
- 16. a point of land extending into an ocean or lake.
- 18. a large, level area of grassland with few or no trees.
- 20. a step-like series of waterfalls.
- 23. flat land near the edges of rivers formed by mud and silt deposited by floods.
Down
- 1. a triangular area of land formed from deposits at the mouth of a river.
- 2. a wide treeless grassy plain
- 3. a sheltered area of water deep enough for docking ships.
- 4. the place where a river flows into a lake or ocean.
- 5. a narrow, deep valley with steep sides.
- 8. level of the ocean's surface, used as a reference point when measuring the height or depth of the earth's surface.
- 10. soft, wet, low-lying, grassy land that serves as a transition between water and land.
- 13. a body of land surrounded by water.
- 14. a spot of fertile land in a desert, fed by water from wells or underground springs.
- 17. a narrow channel connecting two larger bodies of water.
- 19. low land between hills or mountains.
- 21. part of an ocean or lake partially enclosed by land.
- 22. the steep, almost vertical edge of a hill, mountain, or plain.
