Edited by Luke, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Kevin Hutcheson, some rights reserved (CC BY-NC), uploaded by Kevin Hutcheson
- 2. (c) U.S. Geological Survey, some rights reserved (CC BY)
- 3. (c) jackandshirley, some rights reserved (CC BY-NC), uploaded by jackandshirley
- 4. (c) Jake Scott, some rights reserved (CC BY-NC), uploaded by Jake Scott
- 5. (c) Steve Upperman, some rights reserved (CC BY-NC-ND), uploaded by Steve Upperman
- 6. (c) Robby Deans, some rights reserved (CC BY-NC), uploaded by Robby Deans
- 7. (c) Zach Lim, some rights reserved (CC BY-NC), uploaded by Zach Lim
- 8. (c) Ty Smith, some rights reserved (CC BY-NC), uploaded by Ty Smith
- 9. (c) Eric C. Maxwell, some rights reserved (CC BY-NC), uploaded by Eric C. Maxwell
- 10. (c) Robert Dobbs, some rights reserved (CC BY-NC), uploaded by Robert Dobbs
- 11. (c) djmahalk, some rights reserved (CC BY-NC), uploaded by djmahalk
- 12. (c) Justin Lee, some rights reserved (CC BY-NC), uploaded by Justin Lee
- 13. (c) John Clare, some rights reserved (CC BY-NC-ND)
- 14. (c) Brian Gratwicke, some rights reserved (CC BY)
- 15. (c) johnwilliams, some rights reserved (CC BY-NC), uploaded by johnwilliams
- 16. (c) Todd Pierson, some rights reserved (CC BY-NC-SA)
- 17. (c) Jason Ksepka, some rights reserved (CC BY-NC), uploaded by Jason Ksepka
- 18. (c) Travis W. Reeder, some rights reserved (CC BY-NC), uploaded by Travis W. Reeder
- 19. (c) J.D. Willson, some rights reserved (CC BY-NC), uploaded by J.D. Willson
- 20. (c) Amber Hart, some rights reserved (CC BY-NC), uploaded by Amber Hart
- 21. (c) Saunders Drukker, some rights reserved (CC BY-NC), uploaded by Saunders Drukker
- 22. (c) bryan-maltais, some rights reserved (CC BY-NC), uploaded by bryan-maltais
- 23. (c) Josh Vandermeulen, some rights reserved (CC BY-NC-ND), uploaded by Josh Vandermeulen
- 24. (c) shortia, some rights reserved (CC BY-NC)
- 25. (c) fsherps, some rights reserved (CC BY-NC), uploaded by fsherps