Climb the mountain

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Across
  1. 1. A steep, nearly vertical face of rock
  2. 4. The air at high altitudes
  3. 5. A pointed top of a mountain
  4. 7. Large chunks of ice that slowly move down mountain valley
  5. 9. A small mountain or hill
  6. 10. The highest point of a mountain
Down
  1. 2. The area at a base of mountain
  2. 3. Trees found at high elevation on mountains
  3. 6. To climb or hike a mountain
  4. 8. A long, narrow chain of mountains or hills