How were the aqueducts made?

Related questions

1. What were Roman aqueducts built of?
2. What is Segovia famous for?
3. Why was the Aqueduct of Segovia built?
4. What does Segovia mean in English?
5. Who is Segovia?
6. How old is the Segovia Aqueduct?
7. What did John of the Cross do?
8. Who is Lady Julian?
9. What was the purpose of the Aqueduct of Segovia?
10. How long did it take the Romans to build an aqueduct?

Tags

1. #systems
2. #tunnels
3. #years
4. #source
5. #aqueducts
6. #freshwater
7. #spring
8. #water
9. #canals
10. #gravity
11. #slope
12. #channel
13. #aqueduct
14. #built
15. #pipes
16. #series
17. #allowed
18. #bridges
19. #roman
20. #period
21. #natural
22. #about