To cite package ‘ridges’ in publications use:

  Simson J (2025). _ridges: Download Elevation Data For Anywhere In The
  World And Visualize It_. R package version 0.0.0.9000,
  <https://github.com/jansim/ridges>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ridges: Download Elevation Data For Anywhere In The World And Visualize
It},
    author = {Jan Simson},
    year = {2025},
    note = {R package version 0.0.0.9000},
    url = {https://github.com/jansim/ridges},
  }