Nature's wonders

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Across
  1. 4. a wide way leading from one place to another.
  2. 5. a large natural stream of water flowing in a channel.
  3. 6. a piece of land surrounded by water.
  4. 9. a low area of land between hills or mountains.
  5. 11. a deep gorge, typically one with a river flowing through it.
  6. 12. an area of land overgrown with dense forest and tangled vegetation
  7. 13. a large hole in the side of a hill, cliff, or mountain, or one that is underground.
  8. 14. a large natural elevation of the earth's surface rising abruptly.
  9. 15. a pebbly or sandy shore, especially by the ocean between high- and low-water marks.
Down
  1. 1. a large public green area in a town, used for recreation.
  2. 2. a dry, barren area of land, desolate, waterless, and without vegetation.
  3. 3. a cascade of water falling from a heigh.
  4. 7. the expanse of salt water that covers most of the earth's surface
  5. 8. a large area covered chiefly with trees and undergrowth.
  6. 10. a large body of water surrounded by land
  7. 13. a steep rock face, especially at the edge of the sea.
  8. 14. a piece of grassland, especially one used for hay.
  9. 16. a naturally raised area of land, not as high or craggy as a mountain.