Mexico, Sonora, Nacori Chico, Southern tributary to Arroyo San Antonio, 2.36 miles (3.80 km) (air) NW of Mesa Tres Rios near road to Rancho San Antonio, west of road to Huachinera.
29.86545 -108.73917 +-100m. WGS 84
1623 meters
5414 feet
Moist, mossy bedrock ledge in northerly draining side drainage of canyon in mountainous pine-oak woodland.