Krety 4

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Across
  1. 1. to make level (impf)
  2. 4. underground
  3. 5. they levelled
  4. 8. a mound
  5. 10. of a mound
  6. 11. bravely
  7. 13. to start working (perf)
  8. 14. volume
  9. 16. to enhance the effects
  10. 18. local
  11. 19. full volume
Down
  1. 2. a solution
  2. 3. annoying
  3. 4. to enhance (impf)
  4. 6. method
  5. 7. to make level (perf)
  6. 9. inhabitants
  7. 12. on the previous night
  8. 15. they endured
  9. 17. it had started working