Across
- 5. an advanced society of people
- 9. a scientist who studies rocks and earth
- 10. a large stone structure with a pointed top
- 12. a model or way of understanding history
- 13. the usual or accepted way of thinking
- 15. a great rise in water that covers land
- 16. a cold period in Earth's history
- 17. scientists who study ancient remains
- 19. when a group forgets its own past
- 20. made of very large stones
Down
- 1. a lost continent that is now underwater
- 2. the process of digging up the ground
- 3. a mysterious ancient site in Indonesia
- 4. the world of university scholars and experts
- 6. flat steps built into a hillside
- 7. causing strong disagreement
- 8. a huge disaster or flood
- 11. hidden rooms or spaces underground
- 14. facts or proof that support an idea
- 18. people who hunt and collect food