Edited by Minnesota Scientific and Natural Areas, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Josh*m, some rights reserved (CC BY-NC-SA)
- 2. (c) Mathew Zappa, some rights reserved (CC BY), uploaded by Mathew Zappa
- 3. (c) davecz2, some rights reserved (CC BY-SA), uploaded by davecz2
- 4. (c) Superior National Forest, some rights reserved (CC BY)
- 5. (c) lvconrad1977, some rights reserved (CC BY-NC), uploaded by lvconrad1977
- 6. (c) Leo Papandreou, some rights reserved (CC BY-NC-SA)
- 7. (c) jozien, some rights reserved (CC BY-NC), uploaded by jozien
- 8. (c) cassi saari, some rights reserved (CC BY-NC), uploaded by cassi saari
- 9. (c) James Gaither, some rights reserved (CC BY-NC-ND)
- 10. (c) Daniel Carter, all rights reserved, uploaded by Daniel Carter
- 11. (c) Janet Nelson, some rights reserved (CC BY-NC-ND), uploaded by Janet Nelson
- 12. (c) Patrick Alexander, some rights reserved (CC BY-NC-ND)
- 13. (c) 2010 Keir Morse, some rights reserved (CC BY-NC-SA)
- 14. (c) Mallory S., some rights reserved (CC BY-NC), uploaded by Mallory S.
- 15. (c) Rob Curtis, some rights reserved (CC BY-NC-SA), uploaded by Rob Curtis