@misc{indiciae2f299dc563f0,
  title = {Crater Lake National Park: Presently tranquil},
  author = {Hans Nelson and Charles R. Bacon},
  year = {1995},
  doi = {10.3133/70182037},
  url = {https://pubs.usgs.gov/publication/70182037},
  note = {Source identifier: 70182037}
}