@misc{indiciae876de00fdfc2,
  title = {Backcountry recreation site and trail conditions: Haleakala National Park final report, May 2009},
  author = {Jeffrey L. Marion and C. Carr},
  year = {2009},
  url = {https://pubs.usgs.gov/publication/70040249},
  note = {Source identifier: 70040249}
}