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