Sky Island Alliance - Saved 5/28/2020
The Madrean Sky Islands, or Madrean Archipelago, is world biodiversity hotspot in northwestern Mexico and the southwestern United States. This ecoregion is named for the 57 pine- and oak-studded mountain “islands” it encompasses, each separated by desert and grassland “seas.”
At this point I don't know exactly what the original URL was pointing to - https://www.arcgis.com/apps/MapJournal/index.html?appid=50d9dfd6886a48038549cb71aced1e5e - but it was from long time Sky Island Alliance employee and leader Louise Misztal so on an update in 4/4/4026 I re-pointed this to a link to her maps even if the original has been retired...