NATURE

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Across
  1. 2. a high area of rock with a very steep side, often on a coast
  2. 4. a large area of water surrounded by land and not connected to the sea
  3. 7. is a raised part of the earth's surface, much larger than a hill
  4. 8. an area, often covered with sand or rocks, where there is very little rain and not many plants
  5. 9. a large hole in the side of a hill, cliff, or mountain, or one that is underground
Down
  1. 1. a natural wide flow of fresh water across the land
  2. 3. a large area of land covered with trees and plants
  3. 5. very small grains of rock, found on beaches and in deserts
  4. 6. a mountain with a large, circular hole at the top through which lava (= hot liquid rock) gases, steam, and dust are or have been forced out