Tunguska Fireball and Transcontinental RR
Across
- 2. offer an idea
- 5. across a continent
- 8. a streak of fire made by a meteoroid
- 9. in addition
- 11. earth
- 12. an underground passage
- 14. uncovered
- 15. concept, idea
- 17. far from everything
- 19. strings to set off an explosive device
- 20. an area of high, flat land
Down
- 1. a sudden and violent outbreak
- 3. trembled or vibrated
- 4. dangerous
- 6. having lots of light
- 7. to hang or swing loosely
- 10. severely disfigured or damaged
- 13. described
- 16. a source of danger
- 18. location, place
- 19. level; even