Sierra El Tigre trip report, 2008

Report on Sky Island Alliance expedition to the Sierra El Tigre, Sonora, one of the largest Madrean Sky Islands, yet one of the least known. Sergio Avila and I put this together after the trip while I worked for Sky Island Alliance.

“One of the least known regions of the north Mexican border”: S.S. White, 1948.

Sierra El Tigre trip report, 2008