Mount Everest

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Across
  1. 5. a climber
  2. 8. to be unsuccessful
  3. 10. to remain alive
  4. 11. to climb ( a mountain) successfully
Down
  1. 1. to see, to recognize
  2. 2. an indication,a piece of evidence, a hint
  3. 3. a top of a mountain
  4. 4. important
  5. 6. unable to feel anything;frozen
  6. 7. a journey organised for a particular purpose
  7. 8. an impressive or difficult activity
  8. 9. to motivate