Edited by Minnesota Scientific and Natural Areas, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) cotinis, some rights reserved (CC BY-NC-SA)
- 2. (c) Charlie Hohn, some rights reserved (CC BY), uploaded by Charlie Hohn
- 3. (c) Katja Schulz, some rights reserved (CC BY)
- 4. (c) Josh*m, some rights reserved (CC BY-NC-SA)
- 5. (c) manual crank, some rights reserved (CC BY-NC-SA)
- 6. (c) lvconrad1977, some rights reserved (CC BY-NC), uploaded by lvconrad1977
- 7. (c) zen Sutherland, some rights reserved (CC BY-NC-SA)
- 8. (c) Leo Papandreou, some rights reserved (CC BY-NC-SA)
- 9. (c) Lena Dietz Chiasson, some rights reserved (CC BY-NC), uploaded by Lena Dietz Chiasson
- 10. (c) Timothy Valentine, some rights reserved (CC BY-NC-SA)
- 11. (c) Michael Ellis, some rights reserved (CC BY), uploaded by Michael Ellis
- 12. (c) Patrick Alexander, some rights reserved (CC BY-NC-ND)
- 13. (c) Jeff Chapman, some rights reserved (CC BY-NC), uploaded by Jeff Chapman
- 14. (c) Susan Elliott, some rights reserved (CC BY-NC), uploaded by Susan Elliott
- 15. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 16. (c) judith holm, some rights reserved (CC BY-NC-ND), uploaded by judith holm
- 17. (c) Mallory S., some rights reserved (CC BY-NC), uploaded by Mallory S.
- 18. (c) JanetandPhil, some rights reserved (CC BY-NC-ND)
- 19. (c) David Greenberger, some rights reserved (CC BY-NC-ND), uploaded by David Greenberger
- 20. (c) Superior National Forest, some rights reserved (CC BY)