Mountains and coast

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Across
  1. 3. it is when the sun goes away
  2. 4. a steep rock face
  3. 6. it is a low area of land between hills
  4. 8. top of a mountain
Down
  1. 1. a very large expanse of sea
  2. 2. it is when the water falls
  3. 3. it is small pieces of rock
  4. 4. where bears sleeps
  5. 5. it is an oscillating disturbance
  6. 7. where the Loch Ness Monter lives